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2 Activities Problem in Android Studio Code

I'm programming a little app via Android Studio. I'm working with 2 activities. My app stops responding as soon as my first activity opens the second one (When I'm running the app through the emulator). I realized that the problem first appeared as I inserted the for loop in my second activity. But the audio output of the notes is still done in the background.
Would be very nice if you could help me here.
Here the code:
public class MainActivity extends AppCompatActivity {
private Button myButton1, myButton2;
private EditText number;
TextView display;
int time = 0;
Bundle b;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
number = (EditText) findViewById(R.id.editTextNumber);
myButton2 = (Button) findViewById(R.id.button);
display = (TextView) findViewById(R.id.textView2);
myButton2.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
String time = number.getText().toString();
display.setText(time);
}
});
myButton1 = (Button) findViewById(R.id.myButton);
myButton1.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
time = Integer.valueOf(number.getText().toString());
open_activity2();
}
});
}
public void open_activity2() {
Intent intent = new Intent(this, Activity2.class);
intent.putExtra("Time", time);
startActivity(intent);
}
}
Code to Activity2:
public class Activity2 extends AppCompatActivity {
private SoundPool soundPool;
private int sound1, sound2, sound3;
private Bundle b;
private int timeCycle;
private TextView displayNotes;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_2);
displayNotes = (TextView) findViewById(R.id.textView);
b = getIntent().getExtras();
timeCycle = b.getInt("Time");
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
AudioAttributes audioAttributes = new AudioAttributes.Builder()
.setUsage(AudioAttributes.USAGE_ASSISTANCE_SONIFICATION)
.setContentType(AudioAttributes.CONTENT_TYPE_SONIFICATION)
.build();
soundPool = new SoundPool.Builder()
.setMaxStreams(5)
.setAudioAttributes(audioAttributes)
.build();
} else {
soundPool = new SoundPool(5, AudioManager.STREAM_MUSIC, 0);
}
sound1 = soundPool.load(this, R.raw.sound1, 1);
sound2 = soundPool.load(this, R.raw.sound2, 1);
sound3 = soundPool.load(this, R.raw.sound3, 1);
new Handler().postDelayed(new Runnable() {
#Override
public void run() {
for (int i = 0; i < 10; i++) {
try {
TimeUnit.SECONDS.sleep(timeCycle);
runOnUiThread(new Runnable() {
#Override
public void run() {
randomNote();
}
});
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}
}, 0);
}
protected void randomNote () {
Random r = new Random();
int randomNumber = r.nextInt(3);
switch (randomNumber) {
case 0:
soundPool.play(sound1, 1, 1, 1, 0, 1);
displayNotes.setText("Note: C");
break;
case 1:
soundPool.play(sound2, 1, 1, 1, 0, 1);
displayNotes.setText("Note: D");
break;
case 2:
soundPool.play(sound3, 1, 1, 1, 0, 1);
displayNotes.setText("Note: E");
break;
}
}
#Override
protected void onDestroy() {
super.onDestroy();
soundPool.release();
soundPool = null;
}
}
The error message I get, searched for something like XX and exception but didn't find anything:
11/12 15:20:46: Launching 'app' on No Devices.
Install successfully finished in 2 s 532 ms.
$ adb shell am start -n "com.example.noteswiktorapp/com.example.noteswiktorapp.MainActivity" -a android.intent.action.MAIN -c android.intent.category.LAUNCHER
Connected to process 7094 on device 'emulator-5554'.
Capturing and displaying logcat messages from application. This behavior can be disabled in the "Logcat output" section of the "Debugger" settings page.
I/.noteswiktorap: Not late-enabling -Xcheck:jni (already on)
I/.noteswiktorap: Unquickening 12 vdex files!
W/.noteswiktorap: Unexpected CPU variant for X86 using defaults: x86
D/NetworkSecurityConfig: No Network Security Config specified, using platform default
D/NetworkSecurityConfig: No Network Security Config specified, using platform default
D/libEGL: loaded /vendor/lib/egl/libEGL_emulation.so
D/libEGL: loaded /vendor/lib/egl/libGLESv1_CM_emulation.so
D/libEGL: loaded /vendor/lib/egl/libGLESv2_emulation.so
W/.noteswiktorap: Accessing hidden method Landroid/view/View;->computeFitSystemWindows(Landroid/graphics/Rect;Landroid/graphics/Rect;)Z (greylist, reflection, allowed)
Accessing hidden method Landroid/view/ViewGroup;->makeOptionalFitsSystemWindows()V (greylist, reflection, allowed)
D/HostConnection: HostConnection::get() New Host Connection established 0xf1da78b0, tid 7117
D/HostConnection: HostComposition ext ANDROID_EMU_CHECKSUM_HELPER_v1 ANDROID_EMU_native_sync_v2 ANDROID_EMU_native_sync_v3 ANDROID_EMU_native_sync_v4 ANDROID_EMU_dma_v1 ANDROID_EMU_direct_mem ANDROID_EMU_host_composition_v1 ANDROID_EMU_host_composition_v2 ANDROID_EMU_YUV_Cache ANDROID_EMU_async_unmap_buffer GL_OES_EGL_image_external_essl3 GL_OES_vertex_array_object GL_KHR_texture_compression_astc_ldr ANDROID_EMU_gles_max_version_3_0
W/OpenGLRenderer: Failed to choose config with EGL_SWAP_BEHAVIOR_PRESERVED, retrying without...
D/EGL_emulation: eglCreateContext: 0xf1da6500: maj 3 min 0 rcv 3
D/EGL_emulation: eglMakeCurrent: 0xf1da6500: ver 3 0 (tinfo 0xf20f6050) (first time)
I/Gralloc4: mapper 4.x is not supported
D/HostConnection: createUnique: call
D/HostConnection: HostConnection::get() New Host Connection established 0xf1da6810, tid 7117
D/goldfish-address-space: allocate: Ask for block of size 0x100
allocate: ioctl allocate returned offset 0x3fbe53000 size 0x2000
D/HostConnection: HostComposition ext ANDROID_EMU_CHECKSUM_HELPER_v1 ANDROID_EMU_native_sync_v2 ANDROID_EMU_native_sync_v3 ANDROID_EMU_native_sync_v4 ANDROID_EMU_dma_v1 ANDROID_EMU_direct_mem ANDROID_EMU_host_composition_v1 ANDROID_EMU_host_composition_v2 ANDROID_EMU_YUV_Cache ANDROID_EMU_async_unmap_buffer GL_OES_EGL_image_external_essl3 GL_OES_vertex_array_object GL_KHR_texture_compression_astc_ldr ANDROID_EMU_gles_max_version_3_0
I/AssistStructure: Flattened final assist data: 1772 bytes, containing 1 windows, 11 views
D/CCodec: allocate(c2.android.mp3.decoder)
I/Codec2Client: Available Codec2 services: "software"
I/CCodec: Created component [c2.android.mp3.decoder]
D/CCodecConfig: read media type: audio/mpeg
D/ReflectedParamUpdater: extent() != 1 for single value type: algo.buffers.max-count.values
D/ReflectedParamUpdater: extent() != 1 for single value type: output.subscribed-indices.values
extent() != 1 for single value type: input.buffers.allocator-ids.values
extent() != 1 for single value type: output.buffers.allocator-ids.values
D/ReflectedParamUpdater: extent() != 1 for single value type: algo.buffers.allocator-ids.values
extent() != 1 for single value type: output.buffers.pool-ids.values
extent() != 1 for single value type: algo.buffers.pool-ids.values
I/CCodecConfig: query failed after returning 7 values (BAD_INDEX)
D/CCodecConfig: c2 config diff is Dict {
c2::u32 coded.bitrate.value = 64000
c2::u32 input.buffers.max-size.value = 8192
c2::u32 input.delay.value = 0
string input.media-type.value = "audio/mpeg"
string output.media-type.value = "audio/raw"
c2::u32 raw.channel-count.value = 2
c2::u32 raw.sample-rate.value = 44100
}
D/CCodec: [c2.android.mp3.decoder] buffers are bound to CCodec for this session
D/CCodecConfig: no c2 equivalents for durationUs
D/CCodecConfig: no c2 equivalents for track-id
no c2 equivalents for encoder-delay
no c2 equivalents for encoder-padding
no c2 equivalents for flags
D/CCodecConfig: c2 config diff is c2::u32 raw.channel-count.value = 1
c2::u32 raw.sample-rate.value = 48000
W/Codec2Client: query -- param skipped: index = 1107298332.
D/CCodec: setup formats input: AMessage(what = 0x00000000) = {
int32_t channel-count = 1
int32_t max-input-size = 8192
string mime = "audio/mpeg"
int32_t sample-rate = 48000
} and output: AMessage(what = 0x00000000) = {
int32_t channel-count = 1
string mime = "audio/raw"
int32_t sample-rate = 48000
int32_t encoder-delay = 528
int32_t encoder-padding = 1848
}
W/Codec2Client: query -- param skipped: index = 1342179345.
query -- param skipped: index = 2415921170.
E/FMQ: grantorIdx must be less than 3
E/FMQ: grantorIdx must be less than 3
D/CCodecBufferChannel: [c2.android.mp3.decoder#769] Created input block pool with allocatorID 16 => poolID 17 - OK (0)
I/CCodecBufferChannel: [c2.android.mp3.decoder#769] Created output block pool with allocatorID 16 => poolID 26 - OK
D/CCodecBufferChannel: [c2.android.mp3.decoder#769] Configured output block pool ids 26 => OK
E/ion: ioctl c0044901 failed with code -1: Inappropriate ioctl for device
E/FMQ: grantorIdx must be less than 3
E/FMQ: grantorIdx must be less than 3
D/CCodecBufferChannel: [c2.android.mp3.decoder#769] MediaCodec discarded an unknown buffer
I/chatty: uid=10153(com.example.noteswiktorapp) NDK MediaCodec_ identical 1 line
D/CCodecBufferChannel: [c2.android.mp3.decoder#769] MediaCodec discarded an unknown buffer
I/hw-BpHwBinder: onLastStrongRef automatically unlinking death recipients
D/CCodec: allocate(c2.android.mp3.decoder)
I/CCodec: Created component [c2.android.mp3.decoder]
D/CCodecConfig: read media type: audio/mpeg
D/ReflectedParamUpdater: extent() != 1 for single value type: algo.buffers.max-count.values
D/ReflectedParamUpdater: extent() != 1 for single value type: output.subscribed-indices.values
D/ReflectedParamUpdater: extent() != 1 for single value type: input.buffers.allocator-ids.values
D/ReflectedParamUpdater: extent() != 1 for single value type: output.buffers.allocator-ids.values
D/ReflectedParamUpdater: extent() != 1 for single value type: algo.buffers.allocator-ids.values
extent() != 1 for single value type: output.buffers.pool-ids.values
D/ReflectedParamUpdater: extent() != 1 for single value type: algo.buffers.pool-ids.values
I/CCodecConfig: query failed after returning 7 values (BAD_INDEX)
D/CCodecConfig: c2 config diff is Dict {
c2::u32 coded.bitrate.value = 64000
c2::u32 input.buffers.max-size.value = 8192
c2::u32 input.delay.value = 0
string input.media-type.value = "audio/mpeg"
string output.media-type.value = "audio/raw"
c2::u32 raw.channel-count.value = 2
c2::u32 raw.sample-rate.value = 44100
}
D/CCodec: [c2.android.mp3.decoder] buffers are bound to CCodec for this session
D/CCodecConfig: no c2 equivalents for durationUs
no c2 equivalents for track-id
no c2 equivalents for encoder-delay
no c2 equivalents for encoder-padding
no c2 equivalents for flags
D/CCodecConfig: c2 config diff is c2::u32 raw.channel-count.value = 1
c2::u32 raw.sample-rate.value = 48000
W/Codec2Client: query -- param skipped: index = 1107298332.
D/CCodec: setup formats input: AMessage(what = 0x00000000) = {
int32_t channel-count = 1
int32_t max-input-size = 8192
string mime = "audio/mpeg"
int32_t sample-rate = 48000
} and output: AMessage(what = 0x00000000) = {
int32_t channel-count = 1
string mime = "audio/raw"
int32_t sample-rate = 48000
int32_t encoder-delay = 528
int32_t encoder-padding = 1873
}
W/Codec2Client: query -- param skipped: index = 1342179345.
query -- param skipped: index = 2415921170.
E/FMQ: grantorIdx must be less than 3
grantorIdx must be less than 3
D/CCodecBufferChannel: [c2.android.mp3.decoder#939] Created input block pool with allocatorID 16 => poolID 18 - OK (0)
I/CCodecBufferChannel: [c2.android.mp3.decoder#939] Created output block pool with allocatorID 16 => poolID 27 - OK
D/CCodecBufferChannel: [c2.android.mp3.decoder#939] Configured output block pool ids 27 => OK
E/FMQ: grantorIdx must be less than 3
E/FMQ: grantorIdx must be less than 3
D/CCodecBufferChannel: [c2.android.mp3.decoder#939] MediaCodec discarded an unknown buffer
I/chatty: uid=10153(com.example.noteswiktorapp) NDK MediaCodec_ identical 1 line
D/CCodecBufferChannel: [c2.android.mp3.decoder#939] MediaCodec discarded an unknown buffer
I/hw-BpHwBinder: onLastStrongRef automatically unlinking death recipients
D/CCodec: allocate(c2.android.mp3.decoder)
I/CCodec: Created component [c2.android.mp3.decoder]
D/CCodecConfig: read media type: audio/mpeg
D/ReflectedParamUpdater: extent() != 1 for single value type: algo.buffers.max-count.values
D/ReflectedParamUpdater: extent() != 1 for single value type: output.subscribed-indices.values
extent() != 1 for single value type: input.buffers.allocator-ids.values
D/ReflectedParamUpdater: extent() != 1 for single value type: output.buffers.allocator-ids.values
D/ReflectedParamUpdater: extent() != 1 for single value type: algo.buffers.allocator-ids.values
extent() != 1 for single value type: output.buffers.pool-ids.values
D/ReflectedParamUpdater: extent() != 1 for single value type: algo.buffers.pool-ids.values
I/CCodecConfig: query failed after returning 7 values (BAD_INDEX)
D/CCodecConfig: c2 config diff is Dict {
c2::u32 coded.bitrate.value = 64000
c2::u32 input.buffers.max-size.value = 8192
c2::u32 input.delay.value = 0
string input.media-type.value = "audio/mpeg"
string output.media-type.value = "audio/raw"
c2::u32 raw.channel-count.value = 2
c2::u32 raw.sample-rate.value = 44100
}
D/CCodec: [c2.android.mp3.decoder] buffers are bound to CCodec for this session
D/CCodecConfig: no c2 equivalents for durationUs
no c2 equivalents for track-id
no c2 equivalents for encoder-delay
no c2 equivalents for encoder-padding
no c2 equivalents for flags
D/CCodecConfig: c2 config diff is c2::u32 raw.channel-count.value = 1
c2::u32 raw.sample-rate.value = 48000
W/Codec2Client: query -- param skipped: index = 1107298332.
D/CCodec: setup formats input: AMessage(what = 0x00000000) = {
int32_t channel-count = 1
int32_t max-input-size = 8192
string mime = "audio/mpeg"
int32_t sample-rate = 48000
} and output: AMessage(what = 0x00000000) = {
int32_t channel-count = 1
string mime = "audio/raw"
int32_t sample-rate = 48000
int32_t encoder-delay = 528
int32_t encoder-padding = 2393
}
W/Codec2Client: query -- param skipped: index = 1342179345.
query -- param skipped: index = 2415921170.
E/FMQ: grantorIdx must be less than 3
grantorIdx must be less than 3
D/CCodecBufferChannel: [c2.android.mp3.decoder#144] Created input block pool with allocatorID 16 => poolID 19 - OK (0)
I/CCodecBufferChannel: [c2.android.mp3.decoder#144] Created output block pool with allocatorID 16 => poolID 28 - OK
D/CCodecBufferChannel: [c2.android.mp3.decoder#144] Configured output block pool ids 28 => OK
E/FMQ: grantorIdx must be less than 3
E/FMQ: grantorIdx must be less than 3
D/CCodecBufferChannel: [c2.android.mp3.decoder#144] MediaCodec discarded an unknown buffer
I/chatty: uid=10153(com.example.noteswiktorapp) identical 1 line
D/CCodecBufferChannel: [c2.android.mp3.decoder#144] MediaCodec discarded an unknown buffer
I/hw-BpHwBinder: onLastStrongRef automatically unlinking death recipients
D/AudioTrack: createTrack_l(0): AUDIO_OUTPUT_FLAG_FAST denied by server; frameCount 0 -> 109368
D/BufferPoolAccessor2.0: bufferpool2 0xf1a47838 : 0(0 size) total buffers - 0(0 size) used buffers - 0/5 (recycle/alloc) - 4/194 (fetch/transfer)
evictor expired: 1, evicted: 1
I/.noteswiktorap: Thread[3,tid=7102,WaitingInMainSignalCatcherLoop,Thread*=0xe3fcc410,peer=0x13040268,"Signal Catcher"]: reacting to signal 3
D/BufferPoolAccessor2.0: bufferpool2 0xf1a48c68 : 0(0 size) total buffers - 0(0 size) used buffers - 0/5 (recycle/alloc) - 4/210 (fetch/transfer)
evictor expired: 1, evicted: 1
I/.noteswiktorap: Wrote stack traces to tombstoned
D/BufferPoolAccessor2.0: bufferpool2 0xf1a4e8d8 : 0(0 size) total buffers - 0(0 size) used buffers - 0/5 (recycle/alloc) - 4/184 (fetch/transfer)
evictor expired: 1, evicted: 1
D/AudioTrack: createTrack_l(5): AUDIO_OUTPUT_FLAG_FAST denied by server; frameCount 0 -> 103063

You are running
for (int i = 0; i < 10; i++) {
try {
TimeUnit.SECONDS.sleep(timeCycle);
randomNote();
} catch (InterruptedException e) {
e.printStackTrace();
}
}
on the UI thread. This is causing the UI changes to freeze until the loop is completed. If you want to have an active UI while running this code, you use Handler:
new Handler().postDelayed(new Runnable() {
#Override
public void run() {
for (int i = 0; i < 10; i++) {
try {
TimeUnit.SECONDS.sleep(timeCycle);
runOnUiThread(new Runnable() {
#Override
public void run() {
randomNote();
}
});
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}
}, 0);

H2O anomaly per_feature = TRUE java.lang.OutOfMemoryError: Java heap space

I run H2O anomaly with per_feature = TRUE which results in a Java Heap Space error. In some other posts about this error message, I see people suggest using h2o.remove(df) to release the used memory. However, in my case I don’t have any loop, and it seems that there is nothing I can remove to release some used memory.
Here is my code:
library(h2o)
h2o.init(min_mem_size = "10G", max_mem_size = "15G")
data.hex <- as.h2o(data)
x <- names(data.hex)
random_seed <- 42
# Deeplearning Model
print("Deep learning model begins ...")
model.dl = h2o.deeplearning(x = x,
training_frame = data.hex,
autoencoder = TRUE,
activation = "Tanh",
hidden = c(5, 5, 5, 5, 5),
mini_batch_size = 64,
epochs = 100,
stopping_rounds = 15,
variable_importances = TRUE,
seed = random_seed)
# Calculating anomaly per feature
print('Calculating anomaly per feature ...')
errors_per_feature <- h2o.anomaly(model.dl, data.hex, per_feature = TRUE) # Anomaly Detection Algorithm
print('Converting from H2O frame to dataframe ...')
errors1_per_feature <- as.data.frame(errors_per_feature) # Convert back to data frame
Here is the detailed error message:
[1] "Deep learning model begins ..."
|======================================================================| 100%
[1] "Calculating anomaly per feature ..."
ERROR: Unexpected HTTP Status code: 500 Server Error (url = http://localhost:54321/3/Predictions/models/DeepLearning_model_R_1594826474037_2/frames/Accesses_sid_a71f_1)
water.util.DistributedException
[1] "DistributedException from localhost/127.0.0.1:54321: 'Java heap space', caused by java.lang.OutOfMemoryError: Java heap space"
[2] " water.MRTask.getResult(MRTask.java:494)"
[3] " water.MRTask.getResult(MRTask.java:502)"
[4] " water.MRTask.doAll(MRTask.java:397)"
[5] " water.MRTask.doAll(MRTask.java:403)"
[6] " hex.deeplearning.DeepLearningModel.scoreAutoEncoder(DeepLearningModel.java:761)"
[7] " water.api.ModelMetricsHandler.predict(ModelMetricsHandler.java:469)"
[8] " java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)"
[9] " java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)"
[10] " java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)"
[11] " java.base/java.lang.reflect.Method.invoke(Method.java:567)"
[12] " water.api.Handler.handle(Handler.java:60)"
[13] " water.api.RequestServer.serve(RequestServer.java:470)"
[14] " water.api.RequestServer.doGeneric(RequestServer.java:301)"
[15] " water.api.RequestServer.doPost(RequestServer.java:227)"
[16] " javax.servlet.http.HttpServlet.service(HttpServlet.java:755)"
[17] " javax.servlet.http.HttpServlet.service(HttpServlet.java:848)"
[18] " org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:684)"
[19] " org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:501)"
[20] " org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1086)"
[21] " org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:427)"
[22] " org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1020)"
[23] " org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:135)"
[24] " org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.java:154)"
[25] " org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:116)"
[26] " water.webserver.jetty8.Jetty8ServerAdapter$LoginHandler.handle(Jetty8ServerAdapter.java:119)"
[27] " org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.java:154)"
[28] " org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:116)"
[29] " org.eclipse.jetty.server.Server.handle(Server.java:370)"
[30] " org.eclipse.jetty.server.AbstractHttpConnection.handleRequest(AbstractHttpConnection.java:494)"
[31] " org.eclipse.jetty.server.BlockingHttpConnection.handleRequest(BlockingHttpConnection.java:53)"
[32] " org.eclipse.jetty.server.AbstractHttpConnection.content(AbstractHttpConnection.java:984)"
[33] " org.eclipse.jetty.server.AbstractHttpConnection$RequestHandler.content(AbstractHttpConnection.java:1045)"
[34] " org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:861)"
[35] " org.eclipse.jetty.http.HttpParser.parseAvailable(HttpParser.java:236)"
[36] " org.eclipse.jetty.server.BlockingHttpConnection.handle(BlockingHttpConnection.java:72)"
[37] " org.eclipse.jetty.server.bio.SocketConnector$ConnectorEndPoint.run(SocketConnector.java:264)"
[38] " org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:608)"
[39] " org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:543)"
[40] " java.base/java.lang.Thread.run(Thread.java:830)"
[41] "Caused by:java.lang.OutOfMemoryError: Java heap space"
Error in .h2o.doSafeREST(h2oRestApiVersion = h2oRestApiVersion, urlSuffix = page, :
ERROR MESSAGE:
DistributedException from localhost/127.0.0.1:54321: 'Java heap space'
Calls: h2o.anomaly -> .h2o.__remoteSend -> .h2o.doSafeREST
Execution halted
R and H2O version:
H2O cluster version: 3.30.0.6
H2O cluster total nodes: 1
H2O cluster total memory: 13.43 GB
H2O cluster total cores: 16
H2O cluster allowed cores: 16
H2O cluster healthy: TRUE
R Version: R version 3.6.3 (2020-02-29)
I have 16 GB of memory on my macOS.
There are 6 variables (columns) in data: 5 categorical variables and 1 numeric variable. The number of unique values in the 5 categorical variables is 17, 49, 52, 85 and 5032, respectively. The number of rows is ~500k. The data file size is 44 MB (before encoding within H2O).
What can I do in my case to resolve the issue? Please let me know if there is any other information I can provide. Thanks for your help!

[cutting and pasting my response to the h2ostream mailing list here too...]
i suspect the large number of categorical levels is causing the memory to blow up.
try removing that variable and seeing if it at least completes.
if it does, try re-binning into a smaller number of levels somehow.

Golang and apache AB

I have a system with HTTP POST requests and it runs with Spring 5 (standalone tomcat). In short it looks like this:
client (Apache AB) ----> micro service (java or golang) --> RabbitMQ --> Core(spring + tomcat).
The thing is, when I use my Java (Spring) service, it is ok. AB shows this output:
ab -n 1000 -k -s 2 -c 10 -s 60 -p test2.sh -A 113:113 -T 'application/json' https://127.0.0.1:8449/SecureChat/chat/v1/rest-message/send
This is ApacheBench, Version 2.3 <$Revision: 1807734 $>
Copyright 1996 Adam Twiss, Zeus Technology Ltd, http://www.zeustech.net/
Licensed to The Apache Software Foundation, http://www.apache.org/
Benchmarking 127.0.0.1 (be patient)
Completed 100 requests
...
Completed 1000 requests
Finished 1000 requests
Server Software:
Server Hostname: 127.0.0.1
Server Port: 8449
SSL/TLS Protocol: TLSv1.2,ECDHE-RSA-AES256-GCM-SHA384,2048,256
Document Path: /rest-message/send
Document Length: 39 bytes
Concurrency Level: 10
Time taken for tests: 434.853 seconds
Complete requests: 1000
Failed requests: 0
Keep-Alive requests: 0
Total transferred: 498000 bytes
Total body sent: 393000
HTML transferred: 39000 bytes
Requests per second: 2.30 [#/sec] (mean)
Time per request: 4348.528 [ms] (mean)
Time per request: 434.853 [ms] (mean, across all concurrent
requests)
Transfer rate: 1.12 [Kbytes/sec] received
0.88 kb/s sent
2.00 kb/s total
Connection Times (ms)
min mean[+/-sd] median max
Connect: 4 14 7.6 17 53
Processing: 1110 4317 437.2 4285 8383
Waiting: 1107 4314 437.2 4282 8377
Total: 1126 4332 436.8 4300 8403
That is through TLS.
But when I try to use my Golang service I get timeout:
Benchmarking 127.0.0.1 (be patient)...apr_pollset_poll: The timeout specified has expired (70007)
Total of 92 requests completed
And this output:
ab -n 100 -k -s 2 -c 10 -s 60 -p test2.sh -T 'application/json' http://127.0.0.1:8089/
This is ApacheBench, Version 2.3 <$Revision: 1807734 $>
Copyright 1996 Adam Twiss, Zeus Technology Ltd, http://www.zeustech.net/
Licensed to The Apache Software Foundation, http://www.apache.org/
Benchmarking 127.0.0.1 (be patient)...^C
Server Software:
Server Hostname: 127.0.0.1
Server Port: 8089
Document Path: /
Document Length: 39 bytes
Concurrency Level: 10
Time taken for tests: 145.734 seconds
Complete requests: 92
Failed requests: 1
(Connect: 0, Receive: 0, Length: 1, Exceptions: 0)
Keep-Alive requests: 91
Total transferred: 16380 bytes
Total body sent: 32200
HTML transferred: 3549 bytes
Requests per second: 0.63 [#/sec] (mean)
Time per request: 15840.663 [ms] (mean)
Time per request: 1584.066 [ms] (mean, across all concurrent requests)
Transfer rate: 0.11 [Kbytes/sec] received
0.22 kb/s sent
0.33 kb/s total
Connection Times (ms)
min mean[+/-sd] median max
Connect: 0 0 0.0 0 0
Processing: 1229 1494 1955.9 1262 20000
Waiting: 1229 1291 143.8 1262 2212
Total: 1229 1494 1955.9 1262 20000
That is through plane tcp.
I guess I have some mistakes in my code. I made it in one file
func initAmqp(rabbitUrl string) {
var err error
conn, err = amqp.Dial(rabbitUrl)
failOnError(err, "Failed to connect to RabbitMQ")
}
func main() {
err := gcfg.ReadFileInto(&cfg, "config.gcfg")
if err != nil {
log.Fatal(err);
}
PrintConfig(cfg)
if cfg.Section_rabbit.RabbitUrl != "" {
initAmqp(cfg.Section_rabbit.RabbitUrl);
}
mux := http.NewServeMux();
mux.Handle("/", NewLimitHandler(1000, newTestHandler()))
server := http.Server {
Addr: cfg.Section_basic.Port,
Handler: mux,
ReadTimeout: 20 * time.Second,
WriteTimeout: 20 * time.Second,
}
defer conn.Close();
log.Println(server.ListenAndServe());
}
func NewLimitHandler(maxConns int, handler http.Handler) http.Handler {
h := &limitHandler{
connc: make(chan struct{}, maxConns),
handler: handler,
}
for i := 0; i < maxConns; i++ {
h.connc <- struct{}{}
}
return h
}
func newTestHandler() http.Handler {
return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
handler(w, r);
})
}
func handler(w http.ResponseWriter, r *http.Request) {
if b, err := ioutil.ReadAll(r.Body); err == nil {
fmt.Println("message is ", string(b));
res := publishMessages(string(b))
w.Write([]byte(res))
w.WriteHeader(http.StatusOK)
counter ++;
}else {
w.WriteHeader(http.StatusInternalServerError)
w.Write([]byte("500 - Something bad happened!"))
}
}
func publishMessages(payload string) string {
ch, err := conn.Channel()
failOnError(err, "Failed to open a channel")
q, err = ch.QueueDeclare(
"", // name
false, // durable
false, // delete when unused
true, // exclusive
false, // noWait
nil, // arguments
)
failOnError(err, "Failed to declare a queue")
msgs, err := ch.Consume(
q.Name, // queue
"", // consumer
true, // auto-ack
false, // exclusive
false, // no-local
false, // no-wait
nil, // args
)
failOnError(err, "Failed to register a consumer")
corrId := randomString(32)
log.Println("corrId ", corrId)
err = ch.Publish(
"", // exchange
cfg.Section_rabbit.RabbitQeue, // routing key
false, // mandatory
false, // immediate
amqp.Publishing{
DeliveryMode: amqp.Transient,
ContentType: "application/json",
CorrelationId: corrId,
Body: []byte(payload),
Timestamp: time.Now(),
ReplyTo: q.Name,
})
failOnError(err, "Failed to Publish on RabbitMQ")
defer ch.Close();
result := "";
for d := range msgs {
if corrId == d.CorrelationId {
failOnError(err, "Failed to convert body to integer")
log.Println("result = ", string(d.Body))
return string(d.Body);
}else {
log.Println("waiting for result = ")
}
}
return result;
}
Can someone help?
EDIT
here are my variables
type limitHandler struct {
connc chan struct{}
handler http.Handler
}
var conn *amqp.Connection
var q amqp.Queue
EDIT 2
func (h *limitHandler) ServeHTTP(w http.ResponseWriter, req *http.Request) {
select {
case <-h.connc:
fmt.Println("ServeHTTP");
h.handler.ServeHTTP(w, req)
h.connc <- struct{}{}
default:
http.Error(w, "503 too busy", http.StatusServiceUnavailable)
}
}
EDIT 3
func failOnError(err error, msg string) {
if err != nil {
log.Fatalf("%s: %s", msg, err)
panic(fmt.Sprintf("%s: %s", msg, err))
}
}

How to use the sdf_predict() with the model provided by ml_pca() in library(sparklyr)

I get a pca-model
> library(sparklyr)
> library(dplyr)
> sc <- spark_connect("local", version="2.0.0")
> iris_tbl <- copy_to(sc, iris, "iris", overwrite = TRUE)
The following columns have been renamed:
- 'Sepal.Length' => 'Sepal_Length' (#1)
- 'Sepal.Width' => 'Sepal_Width' (#2)
- 'Petal.Length' => 'Petal_Length' (#3)
- 'Petal.Width' => 'Petal_Width' (#4)
> pca_model <- tbl(sc, "iris") %>%
+ select(-Species) %>%
+ ml_pca()
> print(pca_model)
Explained variance:
PC1 PC2 PC3 PC4
0.924618723 0.053066483 0.017102610 0.005212184
Rotation:
PC1 PC2 PC3 PC4
Sepal_Length -0.36138659 -0.65658877 0.58202985 0.3154872
Sepal_Width 0.08452251 -0.73016143 -0.59791083 -0.3197231
Petal_Length -0.85667061 0.17337266 -0.07623608 -0.4798390
Petal_Width -0.35828920 0.07548102 -0.54583143 0.7536574
But can`t use the resulting model to forecast.
sdf_predict(pca_model)
Source: query [?? x 6]
Database: spark connection master=local[4] app=sparklyr local=TRUE
Ends with an error
java.lang.IllegalArgumentException: requirement failed:
The columns of A don't match the number of elements of x. A: 4, x: 0
Inserting data for the forecast does not help
sdf_predict(pca_model, tbl(sc, "iris") %>% select(-Species))
Source: query [?? x 5]
Database: spark connection master=local[4] app=sparklyr local=TRUE
Ends with an error
java.lang.IllegalArgumentException: requirement failed:
The columns of A don't match the number of elements of x. A: 4, x: 0
It is generally possible to use PCA to predict in spark?

Instead of sdf_predict, use sdf_project.
> pca_projected <- sdf_project(pca_model, tbl(sc, "iris") %>% select(-Species),
+ features=rownames(pca_model$components))
> pca_projected %>% collect %>% head
# A tibble: 6 x 8
Sepal_Length Sepal_Width Petal_Length Petal_Width PC1 PC2 PC3 PC4
<dbl> <dbl> <dbl> <dbl> <dbl> <dbl> <dbl> <dbl>
1 5.10 3.50 1.40 0.200 -2.82 -5.65 0.660 -0.0311
2 4.90 3.00 1.40 0.200 -2.79 -5.15 0.842 0.0657
3 4.70 3.20 1.30 0.200 -2.61 -5.18 0.614 -0.0134
4 4.60 3.10 1.50 0.200 -2.76 -5.01 0.600 -0.109
5 5.00 3.60 1.40 0.200 -2.77 -5.65 0.542 -0.0946
6 5.40 3.90 1.70 0.400 -3.22 -6.07 0.463 -0.0576

How can I get USB device serial number from iserialnumber?

I am student of Computer engineering dept of YeungNam University in Korea.
First, sorry about my poor english skill.
I need help, please.
I found USB API for Java.
I need USB device's PID, VID and unique serial number because I need to do identify each USB device for my project(just mass storage device).
I use below example code.
(This is usb4java API example code.)
This code show me some information about USB HUDs, connected devices.
package org.usb4java.javax.examples;
import java.io.UnsupportedEncodingException;
import java.util.List;
import javax.usb.UsbConfiguration;
import javax.usb.UsbDevice;
import javax.usb.UsbDisconnectedException;
import javax.usb.UsbEndpoint;
import javax.usb.UsbException;
import javax.usb.UsbHostManager;
import javax.usb.UsbHub;
import javax.usb.UsbInterface;
import javax.usb.UsbPort;
import javax.usb.UsbServices;
/**
* Dumps all devices by using the javax-usb API.
*
* #author Klaus Reimer <k#ailis.de>
*/
public class DumpDevices
{
/**
* Dumps the specified USB device to stdout.
*
* #param device
* The USB device to dump.
*/
private static void dumpDevice(final UsbDevice device)
{
// Dump information about the device itself
System.out.println(device);
final UsbPort port = device.getParentUsbPort();
if (port != null)
{
System.out.println("Connected to port: " + port.getPortNumber());
System.out.println("Parent: " + port.getUsbHub());
}
// Dump device descriptor
System.out.println(device.getUsbDeviceDescriptor());
// Process all configurations
for (UsbConfiguration configuration: (List<UsbConfiguration>) device
.getUsbConfigurations())
{
// Dump configuration descriptor
System.out.println(configuration.getUsbConfigurationDescriptor());
// Process all interfaces
for (UsbInterface iface: (List<UsbInterface>) configuration
.getUsbInterfaces())
{
// Dump the interface descriptor
System.out.println(iface.getUsbInterfaceDescriptor());
// Process all endpoints
for (UsbEndpoint endpoint: (List<UsbEndpoint>) iface
.getUsbEndpoints())
{
// Dump the endpoint descriptor
System.out.println(endpoint.getUsbEndpointDescriptor());
}
}
}
System.out.println();
// Dump child devices if device is a hub
if (device.isUsbHub())
{
final UsbHub hub = (UsbHub) device;
for (UsbDevice child: (List<UsbDevice>) hub.getAttachedUsbDevices())
{
dumpDevice(child);
}
}
}
/**
* Main method.
*
* #param args
* Command-line arguments (Ignored)
* #throws UsbException
* When an USB error was reported which wasn't handled by this
* program itself.
*/
public static void main(final String[] args) throws UsbException
{
// Get the USB services and dump information about them
final UsbServices services = UsbHostManager.getUsbServices();
System.out.println("USB Service Implementation: "
+ services.getImpDescription());
System.out.println("Implementation version: "
+ services.getImpVersion());
System.out.println("Service API version: " + services.getApiVersion());
System.out.println();
// Dump the root USB hub
dumpDevice(services.getRootUsbHub());
}
}
and this code result like this:
USB Service Implementation: usb4java
Implementation version: 1.2.0
Service API version: 1.0.2
usb4java root hub 1.0.0
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 1.01
bDeviceClass 9 Hub
bDeviceSubClass 0
bDeviceProtocol 0
bMaxPacketSize0 8
idVendor 0xffff
idProduct 0xffff
bcdDevice 0.00
iManufacturer 1
iProduct 2
iSerial 3
bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 18
bNumInterfaces 1
bConfigurationValue 1
iConfiguration 0
bmAttributes 0x80
(Bus Powered)
bMaxPower 0mA
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 0
bInterfaceClass 9 Hub
bInterfaceSubClass 0
bInterfaceProtocol 0
iInterface 0
Bus 002 Device 007: ID 203a:fffa
Connected to port: 1
Parent: usb4java root hub 1.0.0
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 2.00
bDeviceClass 0 Per Interface
bDeviceSubClass 0
bDeviceProtocol 0
bMaxPacketSize0 64
idVendor 0x203a
idProduct 0xfffa
bcdDevice 1.00
iManufacturer 1
iProduct 2
iSerial 3
bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 25
bNumInterfaces 1
bConfigurationValue 1
iConfiguration 1
bmAttributes 0xc0
Self Powered
bMaxPower 0mA
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 1
bInterfaceClass 7 Printer
bInterfaceSubClass 1
bInterfaceProtocol 1
iInterface 4
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x01 EP 1 OUT
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 512
bInterval 0
.
.
.
.
Bus 002 Device 003: ID 152d:2329
Connected to port: 3
Parent: usb4java root hub 1.0.0
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 2.00
bDeviceClass 0 Per Interface
bDeviceSubClass 0
bDeviceProtocol 0
bMaxPacketSize0 64
idVendor 0x152d
idProduct 0x2329
bcdDevice 1.00
iManufacturer 1
iProduct 2
iSerial 5
bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 32
bNumInterfaces 1
bConfigurationValue 1
iConfiguration 4
bmAttributes 0xc0
Self Powered
bMaxPower 2mA
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 2
bInterfaceClass 8 Mass Storage
bInterfaceSubClass 6
bInterfaceProtocol 80
iInterface 6
.
.
.
.
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x02 EP 2 OUT
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 512
bInterval 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x81 EP 1 IN
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 512
bInterval 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x01 EP 1 OUT
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 512
bInterval 0
In result of code, there is mass storage and I can see PID and VID, but there is iserialnumber(index of serial number in device descriptor) instead of real serialnumber.
I think that to identify each USB mass storage device, need combination of PID, VID, S/N.
How can I get serial number?
In Usb4Java, Javax.usb, libusb, these APIs not include methods like 'getSerialnumber()'.
Help me please.

The "iSerial" is the index of the version string in the device's string table. You can retrieve the corresponding string using the getString(byte) method on the device. Same thing goes for "iManufacturer" and "iProduct".
Keep in mind that not all devices will have a unique serial number.