I was jst started learning SQL and trying to use JDBC create connection with mysql, but everytime I try to build connection this exception prompt up. I'm pretty sure I wrote url right and I can open up it in sqlyog, I'm not so sure what's the problem. How should I solve this?
Exception in thread "main" com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure
The last packet successfully received from the server was 1,457 milliseconds ago. The last packet sent successfully to the server was 1,451 milliseconds ago.
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
at com.mysql.jdbc.Util.handleNewInstance(Util.java:403)
at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:990)
at com.mysql.jdbc.ExportControlled.transformSocketToSSLSocket(ExportControlled.java:202)
at com.mysql.jdbc.MysqlIO.negotiateSSLConnection(MysqlIO.java:4869)
at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1656)
at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1217)
at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2189)
at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2220)
at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2015)
at com.mysql.jdbc.ConnectionImpl.<init>(ConnectionImpl.java:768)
at com.mysql.jdbc.JDBC4Connection.<init>(JDBC4Connection.java:47)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
at com.mysql.jdbc.Util.handleNewInstance(Util.java:403)
at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:385)
at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:323)
at java.sql.DriverManager.getConnection(DriverManager.java:664)
at java.sql.DriverManager.getConnection(DriverManager.java:247)
at jdbc.main(jdbc.java:9)
Caused by: javax.net.ssl.SSLHandshakeException: java.security.cert.CertificateException: java.security.cert.CertPathValidatorException: Path does not chain with any of the trust anchors
at sun.security.ssl.Alerts.getSSLException(Alerts.java:192)
at sun.security.ssl.SSLSocketImpl.fatal(SSLSocketImpl.java:1946)
at sun.security.ssl.Handshaker.fatalSE(Handshaker.java:316)
at sun.security.ssl.Handshaker.fatalSE(Handshaker.java:310)
at sun.security.ssl.ClientHandshaker.serverCertificate(ClientHandshaker.java:1640)
at sun.security.ssl.ClientHandshaker.processMessage(ClientHandshaker.java:223)
at sun.security.ssl.Handshaker.processLoop(Handshaker.java:1037)
at sun.security.ssl.Handshaker.process_record(Handshaker.java:965)
at sun.security.ssl.SSLSocketImpl.readRecord(SSLSocketImpl.java:1064)
at sun.security.ssl.SSLSocketImpl.performInitialHandshake(SSLSocketImpl.java:1367)
at sun.security.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:1395)
at sun.security.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:1379)
at com.mysql.jdbc.ExportControlled.transformSocketToSSLSocket(ExportControlled.java:187)
... 18 more
Caused by: java.security.cert.CertificateException: java.security.cert.CertPathValidatorException: Path does not chain with any of the trust anchors
at com.mysql.jdbc.ExportControlled$X509TrustManagerWrapper.checkServerTrusted(ExportControlled.java:303)
at sun.security.ssl.AbstractTrustManagerWrapper.checkServerTrusted(SSLContextImpl.java:1099)
at sun.security.ssl.ClientHandshaker.serverCertificate(ClientHandshaker.java:1622)
... 26 more
Caused by: java.security.cert.CertPathValidatorException: Path does not chain with any of the trust anchors
at sun.security.provider.certpath.PKIXCertPathValidator.validate(PKIXCertPathValidator.java:159)
at sun.security.provider.certpath.PKIXCertPathValidator.engineValidate(PKIXCertPathValidator.java:85)
at java.security.cert.CertPathValidator.validate(CertPathValidator.java:292)
at com.mysql.jdbc.ExportControlled$X509TrustManagerWrapper.checkServerTrusted(ExportControlled.java:296)
... 28 more
Related
I have pipelines on a Data Fusion instance which connects & fetches data from Mysql and inserts i into Big Query. The problem is I randomly receive this error
Communications link failure The last packet successfully received from the server was 20,103 milliseconds ago. The last packet sent successfully to the server was 20,104 milliseconds ago
And when I say random, it is like 2 pipelines run at the same time when succeeds and other one fails. When I just re-run the failed pipeline without any changes, it just works, so there is no pattern.
Here is the full error :
Application diagnostics message: User class threw exception: org.apache.spark.SparkException: Job aborted. at org.apache.spark.internal.io.SparkHadoopWriter$.write(SparkHadoopWriter.scala:105) at
org.apache.spark.rdd.PairRDDFunctions.$anonfun$saveAsNewAPIHadoopDataset$1(PairRDDFunctions.scala:1077) at scala.runtime.java8.JFunction0$mcV$sp.apply(JFunction0$mcV$sp.java:23) at org.apache.spark.rdd.RDDOperationScope$.withScope(RDDOperationScope.scala:151) at org.apache.spark.rdd.RDDOperationScope$.withScope(RDDOperationScope.scala:112) at org.apache.spark.rdd.RDD.withScope(RDD.scala:414) at org.apache.spark.rdd.PairRDDFunctions.saveAsNewAPIHadoopDataset(PairRDDFunctions.scala:1075) at org.apache.spark.api.java.JavaPairRDD.saveAsNewAPIHadoopDataset(JavaPairRDD.scala:833) at
io.cdap.cdap.etl.spark.batch.RDDUtils.saveHadoopDataset(RDDUtils.java:58) at io.cdap.cdap.etl.spark.batch.RDDUtils.saveUsingOutputFormat(RDDUtils.java:47) at io.cdap.cdap.etl.spark.batch.SparkBatchSinkFactory.writeFromRDD(SparkBatchSinkFactory.java:198) at
io.cdap.cdap.etl.spark.batch.BaseRDDCollection$1.run(BaseRDDCollection.java:238) at io.cdap.cdap.etl.spark.SparkPipelineRunner.runPipeline(SparkPipelineRunner.java:344) at io.cdap.cdap.etl.spark.batch.BatchSparkPipelineDriver.run(BatchSparkPipelineDriver.java:235) at io.cdap.cdap.app.runtime.spark.SparkTransactional$2.run(SparkTransactional.java:236) at io.cdap.cdap.app.runtime.spark.SparkTransactional.execute(SparkTransactional.java:208) at io.cdap.cdap.app.runtime.spark.SparkTransactional.execute(SparkTransactional.java:138) at
io.cdap.cdap.app.runtime.spark.AbstractSparkExecutionContext.execute(AbstractSparkExecutionContext.scala:231) at io.cdap.cdap.app.runtime.spark.SerializableSparkExecutionContext.execute(SerializableSparkExecutionContext.scala:63) at io.cdap.cdap.app.runtime.spark.DefaultJavaSparkExecutionContext.execute(DefaultJavaSparkExecutionContext.scala:94) at io.cdap.cdap.api.Transactionals.execute(Transactionals.java:63) at io.cdap.cdap.etl.spark.batch.BatchSparkPipelineDriver.run(BatchSparkPipelineDriver.java:162) at
io.cdap.cdap.app.runtime.spark.SparkMainWrapper$.main(SparkMainWrapper.scala:88) at io.cdap.cdap.app.runtime.spark.SparkMainWrapper.main(SparkMainWrapper.scala) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at
java.lang.reflect.Method.invoke(Method.java:498) at org.apache.spark.deploy.yarn.ApplicationMaster$$anon$2.run(ApplicationMaster.scala:732) Caused by: org.apache.spark.SparkException: Job aborted due to stage failure: Task 5 in stage 0.0 failed 4 times, most recent failure: Lost task 5.3 in stage 0.0 (TID 9)
*** executor 3): org.apache.spark.SparkException: Task failed while writing rows at
org.apache.spark.internal.io.SparkHadoopWriter$.executeTask(SparkHadoopWriter.scala:162) at org.apache.spark.internal.io.SparkHadoopWriter$.$anonfun$write$1(SparkHadoopWriter.scala:88) at org.apache.spark.scheduler.ResultTask.runTask(ResultTask.scala:90) at org.apache.spark.scheduler.Task.run(Task.scala:131) at org.apache.spark.executor.Executor$TaskRunner.$anonfun$run$3(Executor.scala:505) at org.apache.spark.util.Utils$.tryWithSafeFinally(Utils.scala:1439) at org.apache.spark.executor.Executor$TaskRunner.run(Executor.scala:508) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:750) Caused by: java.io.IOException: SQLException in nextKeyValue at org.apache.hadoop.mapreduce.lib.db.DBRecordReader.nextKeyValue(DBRecordReader.java:240) at
io.cdap.plugin.db.batch.source.DataDrivenETLDBInputFormat$1.nextKeyValue(DataDrivenETLDBInputFormat.java:142) at
io.cdap.cdap.etl.spark.io.TrackingRecordReader.nextKeyValue(TrackingRecordReader.java:47) at org.apache.spark.rdd.NewHadoopRDD$$anon$1.hasNext(NewHadoopRDD.scala:247) at org.apache.spark.InterruptibleIterator.hasNext(InterruptibleIterator.scala:37) at
scala.collection.Iterator$$anon$11.hasNext(Iterator.scala:491) at scala.collection.Iterator$$anon$11.hasNext(Iterator.scala:491) at scala.collection.Iterator$$anon$11.hasNext(Iterator.scala:491) at scala.collection.Iterator$$anon$11.hasNext(Iterator.scala:491) at scala.collection.Iterator$$anon$11.hasNext(Iterator.scala:491) at org.apache.spark.internal.io.SparkHadoopWriter$.$anonfun$executeTask$1(SparkHadoopWriter.scala:135) at
org.apache.spark.util.Utils$.tryWithSafeFinallyAndFailureCallbacks(Utils.scala:1473) at
org.apache.spark.internal.io.SparkHadoopWriter$.executeTask(SparkHadoopWriter.scala:134) ... 9 more Caused by: com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure The last packet successfully received from the server was 20,102 milliseconds ago. The last packet sent successfully to the server was 20,102 milliseconds ago. at
com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174) at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64) at com.mysql.cj.jdbc.ServerPreparedState
ment.serverExecute(ServerPreparedStatement.java:633) at com.mysql.cj.jdbc.ServerPreparedStatement.executeInternal(ServerPreparedStatement.java:417) at
com.mysql.cj.jdbc.ClientPreparedStatement.executeQuery(ClientPreparedStatement.java:1003) at
org.apache.hadoop.mapreduce.lib.db.MySQLDataDrivenDBRecordReader.executeQuery(MySQLDataDrivenDBRecordReader.java:49) at org.apache.hadoop.mapreduce.lib.db.DBRecordReader.nextKeyValue(DBRecordReader.java:228) ... 21 more Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet successfully received from the server was 20,102 milliseconds ago. The last packet sent successfully to the server was 20,102 milliseconds ago. at
sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) at
sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at
java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at
com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at
com.mysql.cj.protocol.a.NativeProtocol.readMessage(NativeProtocol.java:546) at
com.mysql.cj.protocol.a.NativeProtocol.checkErrorMessage(NativeProtocol.java:710) at
com.mysql.cj.protocol.a.NativeProtocol.sendCommand(NativeProtocol.java:649) at com.mysql.cj.protocol.a.NativeProtocol.sendCommand(NativeProtocol.java:136) at
com.mysql.cj.NativeSession.sendCommand(NativeSession.java:311) at com.mysql.cj.ServerPreparedQuery.sendExecutePacket(ServerPreparedQuery.java:337) at com.mysql.cj.ServerPreparedQuery.serverExecute(ServerPreparedQuery.java:207) at com.mysql.cj.jdbc.ServerPreparedStatement.serverExecute(ServerPreparedStatement.java:631) ... 25 more Caused by:
java.net.SocketTimeoutException: Read timed out at
java.net.SocketInputStream.socketRead0(Native Method) at
java.net.SocketInputStream.socketRead(SocketInputStream.java:116) at
java.net.SocketInputStream.read(SocketInputStream.java:171) at java.net.SocketInputStream.read(SocketInputStream.java:141) at
sun.security.ssl.SSLSocketInputRecord.read(SSLSocketInputRecord.java:464) at sun.security.ssl.SSLSocketInputRecord.bytesInCompletePacket(SSLSocketInputRecord.java:68) at
sun.security.ssl.SSLSocketImpl.readApplicationRecord(SSLSocketImpl.java:1346) at
sun.security.ssl.SSLSocketImpl.access$300(SSLSocketImpl.java:73) at sun.security.ssl.SSLSocketImpl$AppInputStream.read(SSLSocketImpl.java:962) at java.io.FilterInputStream.read(FilterInputStream.java:133) at com.mysql.cj.protocol.FullReadInputStream.readFully(FullReadInputStream.java:64) at
com.mysql.cj.protocol.a.SimplePacketReader.readHeader(SimplePacketReader.java:63) at com.mysql.cj.protocol.a.SimplePacketReader.readHeader(SimplePacketReader.java:45) at com.mysql.cj.protocol.a.TimeTrackingPacketReader.readHeader(TimeTrackingPacketReader.java:52) at
com.mysql.cj.protocol.a.TimeTrackingPacketReader.readHeader(TimeTrackingPacketReader.java:41) at com.mysql.cj.protocol.a.MultiPacketReader.readHeader(MultiPacketReader.java:54) at com.mysql.cj.protocol.a.MultiPacketReader.readHeader(MultiPacketReader.java:44) at com.mysql.cj.protocol.a.NativeProtocol.readMessage(NativeProtocol.java:540) ... 32 more Driver stacktrace: at org.apache.spark.scheduler.DAGScheduler.failJobAndIndependentStages(DAGScheduler.scala:2304) at
org.apache.spark.scheduler.DAGScheduler.$anonfun$abortStage$2(DAGScheduler.scala:2253) at org.apache.spark.scheduler.DAGScheduler.$anonfun$abortStage$2$adapted(DAGScheduler.scala:2252) at
scala.collection.mutable.ResizableArray.foreach(ResizableArray.scala:62) at
scala.collection.mutable.ResizableArray.foreach$(ResizableArray.scala:55) at
scala.collection.mutable.ArrayBuffer.foreach(ArrayBuffer.scala:49) at org.apache.spark.scheduler.DAGScheduler.abortStage(DAGScheduler.scala:2252) at
org.apache.spark.scheduler.DAGScheduler.$anonfun$handleTaskSetFailed$1(DAGScheduler.scala:1124) at org.apache.spark.scheduler.DAGScheduler.$anonfun$handleTaskSetFailed$1$adapted(DAGScheduler.scala:1124) at
scala.Option.foreach(Option.scala:407) at
org.apache.spark.scheduler.DAGScheduler.handleTaskSetFailed(DAGScheduler.scala:1124) at
org.apache.spark.scheduler.DAGSchedulerEventProcessLoop.doOnReceive(DAGScheduler.scala:2491) at
org.apache.spark.scheduler.DAGSchedulerEventProcessLoop.onReceive(DAGScheduler.scala:2433) at
org.apache.spark.scheduler.DAGSchedulerEventProcessLoop.onReceive(DAGScheduler.scala:2422) at
org.apache.spark.util.EventLoop$$anon$1.run(EventLoop.scala:49) at org.apache.spark.scheduler.DAGScheduler.runJob(DAGScheduler.scala:902) at org.apache.spark.SparkContext.runJob(SparkContext.scala:2204) at
org.apache.spark.SparkContext.runJob(SparkContext.scala:2225) at
org.apache.spark.SparkContext.runJob(SparkContext.scala:2257) at
org.apache.spark.internal.io.SparkHadoopWriter$.write(SparkHadoopWriter.scala:83) ... 28 more Caused by: org.apache.spark.SparkException: Task failed while writing rows at
org.apache.spark.internal.io.SparkHadoopWriter$.executeTask(SparkHadoopWriter.scala:162) at
org.apache.spark.internal.io.SparkHadoopWriter$.$anonfun$write$1(SparkHadoopWriter.scala:88) at
org.apache.spark.scheduler.ResultTask.runTask(ResultTask.scala:90) at org.apache.spark.scheduler.Task.run(Task.scala:131) at org.apache.spark.executor.Executor$TaskRunner.$anonfun$run$3(Executor.scala:505) at org.apache.spark.util.Utils$.tryWithSafeFinally(Utils.scala:1439) at org.apache.spark.executor.Executor$TaskRunner.run(Executor.scala:508) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:750) Caused by: java.io.IOException: SQLException in nextKeyValue at org.apache.hadoop.mapreduce.lib.db.DBRecordReader.nextKeyValue(DBRecordReader.java:240) at io.cdap.plugin.db.batch.source.DataDrivenETLDBInputFormat$1.nextKeyValue(DataDrivenETLDBInputFormat.java:142) at
io.cdap.cdap.etl.spark.io.TrackingRecordReader.nextKeyValue(TrackingRecordReader.java:47) at org.apache.spark.rdd.NewHadoopRDD$$anon$1.hasNext(NewHadoopRDD.scala:247) at org.apache.spark.InterruptibleIterator.hasNext(InterruptibleIterator.scala:37) at scala.collection.Iterator$$anon$11.hasNext(Iterator.scala:491) at scala.collection.Iterator$$anon$11.hasNext(Iterator.scala:491) at scala.collection.Iterator$$anon$11.hasNext(Iterator.scala:491) at
scala.collection.Iterator$$anon$11.hasNext(Iterator.scala:491) at scala.collection.Iterator$$anon$11.hasNext(Iterator.scala:491) at org.apache.spark.internal.io.SparkHadoopWriter$.$anonfun$executeTask$1(SparkHadoopWriter.scala:135) at org.apache.spark.util.Utils$.tryWithSafeFinallyAndFailureCallbacks(Utils.scala:1473) at
org.apache.spark.internal.io.SparkHadoopWriter$.executeTask(SparkHadoopWriter.scala:134) ... 9 more Caused by: com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure The last packet successfully received from the server was 20,102 milliseconds ago. The last packet sent successfully to the server was 20,102 milliseconds ago. at
com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174) at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64) at com.mysql.cj.jdbc.ServerPreparedStatement.serverExecute(ServerPreparedStatement.java:633) at
com.mysql.cj.jdbc.ServerPreparedStatement.executeInternal(ServerPreparedStatement.java:417) at com.mysql.cj.jdbc.ClientPreparedStatement.executeQuery(ClientPreparedStatement.java:1003) at org.apache.hadoop.mapreduce.lib.db.MySQLDataDrivenDBRecordReader.executeQuery(MySQLDataDrivenDBRecordReader.java:49) at org.apache.hadoop.mapreduce.lib.db.DBRecordReader.nextKeyValue(DBRecordReader.java:228) ... 21 more Caused by:
com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure The last packet successfully received from the server was 20,102 milliseconds ago. The last packet sent successfully to the server was 20,102 milliseconds ago. at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62) at
sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151) at
com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) at com.mysql.cj.protocol.a.NativeProtocol.readMessage(NativeProtocol.java:546) at com.mysql.cj.protocol.a.NativeProtocol.checkErrorMessage(NativeProtocol.java:710) at com.mysql.cj.protocol.a.NativeProtocol.sendCommand(NativeProtocol.java:649) at com.mysql.cj.protocol.a.NativeProtocol.sendCommand(NativeProtocol.java:136) at
com.mysql.cj.NativeSession.sendCommand(NativeSession.java:311) at com.mysql.cj.ServerPreparedQuery.sendExecutePacket(ServerPreparedQuery.java:337) at
com.mysql.cj.ServerPreparedQuery.serverExecute(ServerPreparedQuery.java:207) at com.mysql.cj.jdbc.ServerPreparedStatement.serverExecute(ServerPreparedStatement.java:631) ... 25 more Caused by: java.net.SocketTimeoutException: Read timed out at java.net.SocketInputStream.socketRead0(Native Method) at
java.net.SocketInputStream.socketRead(SocketInputStream.java:116) at java.net.SocketInputStream.read(SocketInputStream.java:171) at java.net.SocketInputStream.read(SocketInputStream.java:141) at sun.security.ssl.SSLSocketInputRecord.read(SSLSocketInputRecord.java:464) at sun.security.ssl.SSLSocketInputRecord.bytesInCompletePacket(SSLSocketInputRecord.java:68) at
sun.security.ssl.SSLSocketImpl.readApplicationRecord(SSLSocketImpl.java:1346) at sun.security.ssl.SSLSocketImpl.access$300(SSLSocketImpl.java:73) at sun.security.ssl.SSLSocketImpl$AppInputStream.read(SSLSocketImpl.java:962) at java.io.FilterInputStream.read(FilterInputStream.java:133) at
com.mysql.cj.protocol.FullReadInputStream.readFully(FullReadInputStream.java:64) at com.mysql.cj.protocol.a.SimplePacketReader.readHeader(SimplePacketReader.java:63) at com.mysql.cj.protocol.a.SimplePacketReader.readHeader(SimplePacketReader.java:45) at com.mysql.cj.protocol.a.TimeTrackingPacketReader.readHe
ader(TimeTrackingPacketReader.java:52) at com.mysql.cj.protocol.a.TimeTrackingPacketReader.readHeader(TimeTrackingPacketReader.java:41) at com.mysql.cj.protocol.a.MultiPacketReader.readHeader(MultiPacketReader.java:54) at
com.mysql.cj.protocol.a.MultiPacketReader.readHeader(MultiPacketReader.java:44) at
com.mysql.cj.protocol.a.NativeProtocol.readMessage(NativeProtocol.java:540)```
I am using Spring-batch to read Mysql data.
These following are my spring data configuration:
spring.datasource.batch.driverClassName=com.mysql.jdbc.Driver
spring.datasource.batch.url=jdbc:mysql://192.162.155.11:3306/my_db?autoReconnect=true&verifyServerCertificate=false&useSSL=false&requireSSL=false
spring.datasource.batch.username=root
spring.datasource.batch.password=
spring.datasource.batch.tomcat.time-between-eviction-runs-millis=60000
spring.datasource.batch.tomcat.test-while-idle=true
spring.datasource.batch.tomcat.validation-query=SELECT 1
spring.datasource.batch.tomcat.log-validation-errors=true
spring.datasource.batch.tomcat.initial-size=2
spring.datasource.batch.tomcat.max-active=2
spring.datasource.batch.tomcat.max-wait=60000
# Batch job details
spring.batch.chunk.size=1000
spring.batch.page.size=500000
spring.batch.allow.start.if.complete=true
spring.listener.message.ms=10
spring.batch.executor.pool=5
I run a scheduler after every 2 seconds which checks for any new row in MySQL and start the spring batch if any new data found in Mysql.
I am successfully able to read data from Mysql but the problem is that after some time I am getting this below error:
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.lang.Thread.run(Thread.java:745)
Caused by: com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException: No operations allowed after connection closed.
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
at com.mysql.jdbc.Util.handleNewInstance(Util.java:425)
at com.mysql.jdbc.Util.getInstance(Util.java:408)
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:918)
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:897)
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:886)
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:860)
at com.mysql.jdbc.ConnectionImpl.throwConnectionClosedException(ConnectionImpl.java:1198)
at com.mysql.jdbc.ConnectionImpl.checkClosed(ConnectionImpl.java:1193)
at com.mysql.jdbc.ConnectionImpl.getMetaData(ConnectionImpl.java:2903)
at com.mysql.jdbc.ConnectionImpl.getMetaData(ConnectionImpl.java:2898)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.apache.tomcat.jdbc.pool.ProxyConnection.invoke(ProxyConnection.java:126)
at org.apache.tomcat.jdbc.pool.JdbcInterceptor.invoke(JdbcInterceptor.java:108)
at org.apache.tomcat.jdbc.pool.DisposableConnectionFacade.invoke(DisposableConnectionFacade.java:81)
at com.sun.proxy.$Proxy137.getMetaData(Unknown Source)
at org.springframework.jdbc.support.JdbcUtils.extractDatabaseMetaData(JdbcUtils.java:331)
... 39 common frames omitted
Caused by: com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: The last packet successfully received from the server was 65,074,919 milliseconds ago. The last packet sent successfully to the server was 65,074,920 milliseconds ago. is longer than the server configured value of 'wait_timeout'. You should consider either expiring and/or testing connection validity before use in your application, increasing the server configured values for client timeouts, or using the Connector/J connection property 'autoReconnect=true' to avoid this problem.
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
at com.mysql.jdbc.Util.handleNewInstance(Util.java:425)
at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:989)
at com.mysql.jdbc.MysqlIO.send(MysqlIO.java:3746)
at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:2509)
at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2680)
at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2497)
at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2455)
at com.mysql.jdbc.StatementImpl.executeQuery(StatementImpl.java:1369)
at com.mysql.jdbc.ConnectionImpl.isReadOnly(ConnectionImpl.java:3541)
at com.mysql.jdbc.ConnectionImpl.isReadOnly(ConnectionImpl.java:3516)
at com.mysql.jdbc.PreparedStatement.executeBatchInternal(PreparedStatement.java:1230)
at com.mysql.jdbc.StatementImpl.executeBatch(StatementImpl.java:958)
at org.springframework.jdbc.core.JdbcTemplate$4.doInPreparedStatement(JdbcTemplate.java:966)
at org.springframework.jdbc.core.JdbcTemplate$4.doInPreparedStatement(JdbcTemplate.java:950)
at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:633)
... 33 common frames omitted
Caused by: java.net.SocketException: Broken pipe (Write failed)
at java.net.SocketOutputStream.socketWrite0(Native Method)
at java.net.SocketOutputStream.socketWrite(SocketOutputStream.java:111)
at java.net.SocketOutputStream.write(SocketOutputStream.java:155)
at java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:82)
at java.io.BufferedOutputStream.flush(BufferedOutputStream.java:140)
at com.mysql.jdbc.MysqlIO.send(MysqlIO.java:3728)
I'm trying to install git-plugin on jenkins.
I've installed all the dependencies that are needed for git-plugin.
But I'm still getting the file not found exception.
Please help me solve this error
java.io.FileNotFoundException: http://archives.jenkins-ci.org/plugins/git/3.6.3/git.hpi
at sun.net.www.protocol.http.HttpURLConnection.getInputStream0(HttpURLConnection.java:1872)
at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1474)
at sun.net.www.protocol.http.HttpURLConnection.getHeaderField(HttpURLConnection.java:2982)
at java.net.URLConnection.getHeaderFieldLong(URLConnection.java:629)
at java.net.URLConnection.getContentLengthLong(URLConnection.java:501)
at java.net.URLConnection.getContentLength(URLConnection.java:485)
at hudson.model.UpdateCenter$UpdateCenterConfiguration.download(UpdateCenter.java:1126)
Caused: java.io.FileNotFoundException: http://archives.jenkins-ci.org/plugins/git/3.6.3/git.hpi
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
at sun.net.www.protocol.http.HttpURLConnection$10.run(HttpURLConnection.java:1926)
at sun.net.www.protocol.http.HttpURLConnection$10.run(HttpURLConnection.java:1921)
at java.security.AccessController.doPrivileged(Native Method)
at sun.net.www.protocol.http.HttpURLConnection.getChainedException(HttpURLConnection.java:1920)
at sun.net.www.protocol.http.HttpURLConnection.getInputStream0(HttpURLConnection.java:1490)
at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1474)
at hudson.model.UpdateCenter$UpdateCenterConfiguration.download(UpdateCenter.java:1139)
Caused: java.io.IOException: Failed to load http://updates.jenkins-ci.org/download/plugins/git/3.6.3/git.hpi to /var/lib/jenkins/plugins/git.jpi.tmp
at hudson.model.UpdateCenter$UpdateCenterConfiguration.download(UpdateCenter.java:1146)
Caused: hudson.util.IOException2: Failed to download from http://updates.jenkins-ci.org/download/plugins/git/3.6.3/git.hpi (redirected to: http://archives.jenkins-ci.org/plugins/git/3.6.3/git.hpi)
at hudson.model.UpdateCenter$UpdateCenterConfiguration.download(UpdateCenter.java:1172)
at hudson.model.UpdateCenter$DownloadJob._run(UpdateCenter.java:1677)
at hudson.model.UpdateCenter$InstallationJob._run(UpdateCenter.java:1874)
at hudson.model.UpdateCenter$DownloadJob.run(UpdateCenter.java:1651)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at hudson.remoting.AtmostOneThreadExecutor$Worker.run(AtmostOneThreadExecutor.java:110)
at java.lang.Thread.run(Thread.java:748)
When I "mvn exec:java" the java program, I have problems to set port to 80, but 8080 can be successful.
Undertow server = Undertow.builder()
.addHttpListener(80, "localhost")
.setHandler(path)
.build();
server.start();
when I set it as 80, i got exceptions like
java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.codehaus.mojo.exec.ExecJavaMojo$1.run(ExecJavaMojo.java:297)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.RuntimeException: java.net.SocketException: Permission denied
at io.undertow.Undertow.start(Undertow.java:141)
at cc.cmu.edu.Q1.Q1Controller.main(Q1Controller.java:46)
... 6 more
Caused by: java.net.SocketException: Permission denied
at sun.nio.ch.Net.bind0(Native Method)
at sun.nio.ch.Net.bind(Net.java:433)
at sun.nio.ch.Net.bind(Net.java:425)
at sun.nio.ch.ServerSocketChannelImpl.bind(ServerSocketChannelImpl.java:223)
at sun.nio.ch.ServerSocketAdaptor.bind(ServerSocketAdaptor.java:74)
at sun.nio.ch.ServerSocketAdaptor.bind(ServerSocketAdaptor.java:67)
at org.xnio.nio.NioXnioWorker.createTcpConnectionServer(NioXnioWorker.java:175)
at org.xnio.XnioWorker.createStreamConnectionServer(XnioWorker.java:242)
at io.undertow.Undertow.start(Undertow.java:120)
... 7 more
You need root access to be able to listen on all ports below 1024.
Start your application as root, or with a sudo command.
My java prog is compiling and executing fine with
mysqlCon = (Connection) DriverManager.getConnection("jdbc:mysql://10.129.70.44:3306/test", "root", "root");
but when I type
mysqlCon = (Connection) DriverManager.getConnection("jdbc:mysql://localhost:3306/test", "root", "root");
it is faling
giving following error:
Exception in thread "main" com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure
The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:532)
at com.mysql.jdbc.Util.handleNewInstance(Util.java:411)
at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121)
at com.mysql.jdbc.MysqlIO.<init>(MysqlIO.java:355)
at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2479)
at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2516)
at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2301)
at com.mysql.jdbc.ConnectionImpl.<init>(ConnectionImpl.java:834)
at com.mysql.jdbc.JDBC4Connection.<init>(JDBC4Connection.java:47)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:532)
at com.mysql.jdbc.Util.handleNewInstance(Util.java:411)
at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416)
at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317)
at java.sql.DriverManager.getConnection(DriverManager.java:620)
at java.sql.DriverManager.getConnection(DriverManager.java:222)
at just.main(just.java:17)
Caused by: java.net.ConnectException: Connection refused
at java.net.PlainSocketImpl.socketConnect(Native Method)
at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:327)
at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:193)
at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:180)
at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:384)
at java.net.Socket.connect(Socket.java:546)
at java.net.Socket.connect(Socket.java:495)
at java.net.Socket.<init>(Socket.java:392)
at java.net.Socket.<init>(Socket.java:235)
at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259)
at com.mysql.jdbc.MysqlIO.<init>(MysqlIO.java:305)
... 15 more
Again, when I do $mysql -hlocalhost -u root -p in Ubuntu 12.04 terminal its connecting to mysql>
but when I am typing $telnet localhost 3306 I am getting the following error:
Trying 127.0.0.1...
telnet: Unable to connect to remote host: Connection refused
You need to grant all to root from localhost.
GRANT ALL ON *.* TO 'root'#'localhost'
Did you try 127.0.0.1 instead of Localhost?
On the side note:
If you have any mysql client, then try there first. Probably you can try to connect from command prompt first. If it works, then you can use that.