Unable to use Flink RocksDB state backend due to endianness mismatch

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Unable to use Flink RocksDB state backend due to endianness mismatch

mmziyad

Dear all,

My Flink Job reads from a kafka topic and store the data in a RocksDB state backend, in order to make use of the queryable state. I'm able to run the job and query the state in my local machine. But when deploying on the cluster, I'm getting the below error:

Caused by: org.apache.flink.runtime.client.JobExecutionException: Job execution failed.
at org.apache.flink.runtime.jobmanager.JobManager$$anonfun$handleMessage$1$$anonfun$applyOrElse$6.apply$mcV$sp(JobManager.scala:900)
at org.apache.flink.runtime.jobmanager.JobManager$$anonfun$handleMessage$1$$anonfun$applyOrElse$6.apply(JobManager.scala:843)
at org.apache.flink.runtime.jobmanager.JobManager$$anonfun$handleMessage$1$$anonfun$applyOrElse$6.apply(JobManager.scala:843)
at scala.concurrent.impl.Future$PromiseCompletingRunnable.liftedTree1$1(Future.scala:24)
at scala.concurrent.impl.Future$PromiseCompletingRunnable.run(Future.scala:24)
at akka.dispatch.TaskInvocation.run(AbstractDispatcher.scala:40)
at akka.dispatch.ForkJoinExecutorConfigurator$AkkaForkJoinTask.exec(AbstractDispatcher.scala:397)
at scala.concurrent.forkjoin.ForkJoinTask.doExec(ForkJoinTask.java:260)
at scala.concurrent.forkjoin.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1339)
at scala.concurrent.forkjoin.ForkJoinPool.runWorker(ForkJoinPool.java:1979)
at scala.concurrent.forkjoin.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:107)

Caused by: java.lang.IllegalStateException: Could not initialize keyed state backend.
at org.apache.flink.streaming.api.operators.AbstractStreamOperator.initKeyedState(AbstractStreamOperator.java:286)
at org.apache.flink.streaming.api.operators.AbstractStreamOperator.initializeState(AbstractStreamOperator.java:199)
at org.apache.flink.streaming.runtime.tasks.StreamTask.initializeOperators(StreamTask.java:666)
at org.apache.flink.streaming.runtime.tasks.StreamTask.initializeState(StreamTask.java:654)
at org.apache.flink.streaming.runtime.tasks.StreamTask.invoke(StreamTask.java:257)
at org.apache.flink.runtime.taskmanager.Task.run(Task.java:655)
at java.lang.Thread.run(Thread.java:745)

Caused by: java.lang.Exception: Could not load the native RocksDB library
at org.apache.flink.contrib.streaming.state.RocksDBStateBackend.ensureRocksDBIsLoaded(RocksDBStateBackend.java:483)
at org.apache.flink.contrib.streaming.state.RocksDBStateBackend.createKeyedStateBackend(RocksDBStateBackend.java:235)
at org.apache.flink.streaming.runtime.tasks.StreamTask.createKeyedStateBackend(StreamTask.java:785)
at org.apache.flink.streaming.api.operators.AbstractStreamOperator.initKeyedState(AbstractStreamOperator.java:277)
... 6 more

Caused by: java.lang.UnsatisfiedLinkError: /data/hadoop/tmp/rocksdb-lib-32bc6a5551b331596649309a808b287d/librocksdbjni-linux64.so: /data/hadoop/tmp/rocksdb-lib-32bc6a5551b331596649309a808b287d/librocksdbjni-linux64.so: ELF file data encoding not big-endian (Possible cause: endianness mismatch)
at java.lang.ClassLoader$NativeLibrary.load(Native Method)
at java.lang.ClassLoader.loadLibrary0(ClassLoader.java:1941)
at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1824)
at java.lang.Runtime.load0(Runtime.java:809)
at java.lang.System.load(System.java:1086)
at org.rocksdb.NativeLibraryLoader.loadLibraryFromJar(NativeLibraryLoader.java:78)
at org.rocksdb.NativeLibraryLoader.loadLibrary(NativeLibraryLoader.java:56)
at org.apache.flink.contrib.streaming.state.RocksDBStateBackend.ensureRocksDBIsLoaded(RocksDBStateBackend.java:460)

I have tried setting the rocksDB state backend at cluster level and job level. when it is set at job level, I have provided it as a shaded dependency. I have tried compiling the code on the host cluster machine as well. I get the same error in all the cases. 

ELF file data encoding not big-endian (Possible cause: endianness mismatch)

How can I solve this error?

Thanks in advance
Ziyad

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Re: Unable to use Flink RocksDB state backend due to endianness mismatch

Stefan Richter
Hi,

RocksDB is a native library with JNI binding. It is included as a dependency and does not build from source when you build Flink. The included jar provides native code for Linux, OSX, and Windows on x86-64. From the Exception, I would conclude you are using a different CPU architecture that is big endian. In this case, you would have to compile RocksDB yourself on your native platform and replace the jar that ships with Flink.

Best,
Stefan

Am 03.06.2017 um 14:16 schrieb Ziyad Muhammed <[hidden email]>:

Dear all,

My Flink Job reads from a kafka topic and store the data in a RocksDB state backend, in order to make use of the queryable state. I'm able to run the job and query the state in my local machine. But when deploying on the cluster, I'm getting the below error:

Caused by: org.apache.flink.runtime.client.JobExecutionException: Job execution failed.
at org.apache.flink.runtime.jobmanager.JobManager$$anonfun$handleMessage$1$$anonfun$applyOrElse$6.apply$mcV$sp(JobManager.scala:900)
at org.apache.flink.runtime.jobmanager.JobManager$$anonfun$handleMessage$1$$anonfun$applyOrElse$6.apply(JobManager.scala:843)
at org.apache.flink.runtime.jobmanager.JobManager$$anonfun$handleMessage$1$$anonfun$applyOrElse$6.apply(JobManager.scala:843)
at scala.concurrent.impl.Future$PromiseCompletingRunnable.liftedTree1$1(Future.scala:24)
at scala.concurrent.impl.Future$PromiseCompletingRunnable.run(Future.scala:24)
at akka.dispatch.TaskInvocation.run(AbstractDispatcher.scala:40)
at akka.dispatch.ForkJoinExecutorConfigurator$AkkaForkJoinTask.exec(AbstractDispatcher.scala:397)
at scala.concurrent.forkjoin.ForkJoinTask.doExec(ForkJoinTask.java:260)
at scala.concurrent.forkjoin.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1339)
at scala.concurrent.forkjoin.ForkJoinPool.runWorker(ForkJoinPool.java:1979)
at scala.concurrent.forkjoin.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:107)

Caused by: java.lang.IllegalStateException: Could not initialize keyed state backend.
at org.apache.flink.streaming.api.operators.AbstractStreamOperator.initKeyedState(AbstractStreamOperator.java:286)
at org.apache.flink.streaming.api.operators.AbstractStreamOperator.initializeState(AbstractStreamOperator.java:199)
at org.apache.flink.streaming.runtime.tasks.StreamTask.initializeOperators(StreamTask.java:666)
at org.apache.flink.streaming.runtime.tasks.StreamTask.initializeState(StreamTask.java:654)
at org.apache.flink.streaming.runtime.tasks.StreamTask.invoke(StreamTask.java:257)
at org.apache.flink.runtime.taskmanager.Task.run(Task.java:655)
at java.lang.Thread.run(Thread.java:745)

Caused by: java.lang.Exception: Could not load the native RocksDB library
at org.apache.flink.contrib.streaming.state.RocksDBStateBackend.ensureRocksDBIsLoaded(RocksDBStateBackend.java:483)
at org.apache.flink.contrib.streaming.state.RocksDBStateBackend.createKeyedStateBackend(RocksDBStateBackend.java:235)
at org.apache.flink.streaming.runtime.tasks.StreamTask.createKeyedStateBackend(StreamTask.java:785)
at org.apache.flink.streaming.api.operators.AbstractStreamOperator.initKeyedState(AbstractStreamOperator.java:277)
... 6 more

Caused by: java.lang.UnsatisfiedLinkError: /data/hadoop/tmp/rocksdb-lib-32bc6a5551b331596649309a808b287d/librocksdbjni-linux64.so: /data/hadoop/tmp/rocksdb-lib-32bc6a5551b331596649309a808b287d/librocksdbjni-linux64.so: ELF file data encoding not big-endian (Possible cause: endianness mismatch)
at java.lang.ClassLoader$NativeLibrary.load(Native Method)
at java.lang.ClassLoader.loadLibrary0(ClassLoader.java:1941)
at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1824)
at java.lang.Runtime.load0(Runtime.java:809)
at java.lang.System.load(System.java:1086)
at org.rocksdb.NativeLibraryLoader.loadLibraryFromJar(NativeLibraryLoader.java:78)
at org.rocksdb.NativeLibraryLoader.loadLibrary(NativeLibraryLoader.java:56)
at org.apache.flink.contrib.streaming.state.RocksDBStateBackend.ensureRocksDBIsLoaded(RocksDBStateBackend.java:460)

I have tried setting the rocksDB state backend at cluster level and job level. when it is set at job level, I have provided it as a shaded dependency. I have tried compiling the code on the host cluster machine as well. I get the same error in all the cases. 

ELF file data encoding not big-endian (Possible cause: endianness mismatch)

How can I solve this error?

Thanks in advance
Ziyad


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Re: Unable to use Flink RocksDB state backend due to endianness mismatch

mmziyad
Hi Stefan

I could solve the issue by building frocksdb with a patch for ppc architecture. How ever this patch is already applied to the latest version of rocksdb, where as frocksdb seems not updated in a while. It would be nice to have it updated with this patch.

Thanks
Ziyad


On Tue, Jun 6, 2017 at 10:01 AM, Stefan Richter <[hidden email]> wrote:
Hi,

RocksDB is a native library with JNI binding. It is included as a dependency and does not build from source when you build Flink. The included jar provides native code for Linux, OSX, and Windows on x86-64. From the Exception, I would conclude you are using a different CPU architecture that is big endian. In this case, you would have to compile RocksDB yourself on your native platform and replace the jar that ships with Flink.

Best,
Stefan

Am 03.06.2017 um 14:16 schrieb Ziyad Muhammed <[hidden email]>:

Dear all,

My Flink Job reads from a kafka topic and store the data in a RocksDB state backend, in order to make use of the queryable state. I'm able to run the job and query the state in my local machine. But when deploying on the cluster, I'm getting the below error:

Caused by: org.apache.flink.runtime.client.JobExecutionException: Job execution failed.
at org.apache.flink.runtime.jobmanager.JobManager$$anonfun$handleMessage$1$$anonfun$applyOrElse$6.apply$mcV$sp(JobManager.scala:900)
at org.apache.flink.runtime.jobmanager.JobManager$$anonfun$handleMessage$1$$anonfun$applyOrElse$6.apply(JobManager.scala:843)
at org.apache.flink.runtime.jobmanager.JobManager$$anonfun$handleMessage$1$$anonfun$applyOrElse$6.apply(JobManager.scala:843)
at scala.concurrent.impl.Future$PromiseCompletingRunnable.liftedTree1$1(Future.scala:24)
at scala.concurrent.impl.Future$PromiseCompletingRunnable.run(Future.scala:24)
at akka.dispatch.TaskInvocation.run(AbstractDispatcher.scala:40)
at akka.dispatch.ForkJoinExecutorConfigurator$AkkaForkJoinTask.exec(AbstractDispatcher.scala:397)
at scala.concurrent.forkjoin.ForkJoinTask.doExec(ForkJoinTask.java:260)
at scala.concurrent.forkjoin.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1339)
at scala.concurrent.forkjoin.ForkJoinPool.runWorker(ForkJoinPool.java:1979)
at scala.concurrent.forkjoin.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:107)

Caused by: java.lang.IllegalStateException: Could not initialize keyed state backend.
at org.apache.flink.streaming.api.operators.AbstractStreamOperator.initKeyedState(AbstractStreamOperator.java:286)
at org.apache.flink.streaming.api.operators.AbstractStreamOperator.initializeState(AbstractStreamOperator.java:199)
at org.apache.flink.streaming.runtime.tasks.StreamTask.initializeOperators(StreamTask.java:666)
at org.apache.flink.streaming.runtime.tasks.StreamTask.initializeState(StreamTask.java:654)
at org.apache.flink.streaming.runtime.tasks.StreamTask.invoke(StreamTask.java:257)
at org.apache.flink.runtime.taskmanager.Task.run(Task.java:655)
at java.lang.Thread.run(Thread.java:745)

Caused by: java.lang.Exception: Could not load the native RocksDB library
at org.apache.flink.contrib.streaming.state.RocksDBStateBackend.ensureRocksDBIsLoaded(RocksDBStateBackend.java:483)
at org.apache.flink.contrib.streaming.state.RocksDBStateBackend.createKeyedStateBackend(RocksDBStateBackend.java:235)
at org.apache.flink.streaming.runtime.tasks.StreamTask.createKeyedStateBackend(StreamTask.java:785)
at org.apache.flink.streaming.api.operators.AbstractStreamOperator.initKeyedState(AbstractStreamOperator.java:277)
... 6 more

Caused by: java.lang.UnsatisfiedLinkError: /data/hadoop/tmp/rocksdb-lib-32bc6a5551b331596649309a808b287d/librocksdbjni-linux64.so: /data/hadoop/tmp/rocksdb-lib-32bc6a5551b331596649309a808b287d/librocksdbjni-linux64.so: ELF file data encoding not big-endian (Possible cause: endianness mismatch)
at java.lang.ClassLoader$NativeLibrary.load(Native Method)
at java.lang.ClassLoader.loadLibrary0(ClassLoader.java:1941)
at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1824)
at java.lang.Runtime.load0(Runtime.java:809)
at java.lang.System.load(System.java:1086)
at org.rocksdb.NativeLibraryLoader.loadLibraryFromJar(NativeLibraryLoader.java:78)
at org.rocksdb.NativeLibraryLoader.loadLibrary(NativeLibraryLoader.java:56)
at org.apache.flink.contrib.streaming.state.RocksDBStateBackend.ensureRocksDBIsLoaded(RocksDBStateBackend.java:460)

I have tried setting the rocksDB state backend at cluster level and job level. when it is set at job level, I have provided it as a shaded dependency. I have tried compiling the code on the host cluster machine as well. I get the same error in all the cases. 

ELF file data encoding not big-endian (Possible cause: endianness mismatch)

How can I solve this error?

Thanks in advance
Ziyad



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Re: Unable to use Flink RocksDB state backend due to endianness mismatch

Stefan Richter
Hi,

we would also like to update to the latest RocksDB and drop FRocksDB altogether. But unfortunately, newer versions of RocksDB have issues with certain features in the Java API that we use in Flink, for example this one https://github.com/facebook/rocksdb/issues/1964. Once those problems are fixed, we can consider upgrading.

Best,
Stefan 

Am 15.06.2017 um 18:23 schrieb Ziyad Muhammed <[hidden email]>:

Hi Stefan

I could solve the issue by building frocksdb with a patch for ppc architecture. How ever this patch is already applied to the latest version of rocksdb, where as frocksdb seems not updated in a while. It would be nice to have it updated with this patch.

Thanks
Ziyad


On Tue, Jun 6, 2017 at 10:01 AM, Stefan Richter <[hidden email]> wrote:
Hi,

RocksDB is a native library with JNI binding. It is included as a dependency and does not build from source when you build Flink. The included jar provides native code for Linux, OSX, and Windows on x86-64. From the Exception, I would conclude you are using a different CPU architecture that is big endian. In this case, you would have to compile RocksDB yourself on your native platform and replace the jar that ships with Flink.

Best,
Stefan

Am 03.06.2017 um 14:16 schrieb Ziyad Muhammed <[hidden email]>:

Dear all,

My Flink Job reads from a kafka topic and store the data in a RocksDB state backend, in order to make use of the queryable state. I'm able to run the job and query the state in my local machine. But when deploying on the cluster, I'm getting the below error:

Caused by: org.apache.flink.runtime.client.JobExecutionException: Job execution failed.
at org.apache.flink.runtime.jobmanager.JobManager$$anonfun$handleMessage$1$$anonfun$applyOrElse$6.apply$mcV$sp(JobManager.scala:900)
at org.apache.flink.runtime.jobmanager.JobManager$$anonfun$handleMessage$1$$anonfun$applyOrElse$6.apply(JobManager.scala:843)
at org.apache.flink.runtime.jobmanager.JobManager$$anonfun$handleMessage$1$$anonfun$applyOrElse$6.apply(JobManager.scala:843)
at scala.concurrent.impl.Future$PromiseCompletingRunnable.liftedTree1$1(Future.scala:24)
at scala.concurrent.impl.Future$PromiseCompletingRunnable.run(Future.scala:24)
at akka.dispatch.TaskInvocation.run(AbstractDispatcher.scala:40)
at akka.dispatch.ForkJoinExecutorConfigurator$AkkaForkJoinTask.exec(AbstractDispatcher.scala:397)
at scala.concurrent.forkjoin.ForkJoinTask.doExec(ForkJoinTask.java:260)
at scala.concurrent.forkjoin.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1339)
at scala.concurrent.forkjoin.ForkJoinPool.runWorker(ForkJoinPool.java:1979)
at scala.concurrent.forkjoin.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:107)

Caused by: java.lang.IllegalStateException: Could not initialize keyed state backend.
at org.apache.flink.streaming.api.operators.AbstractStreamOperator.initKeyedState(AbstractStreamOperator.java:286)
at org.apache.flink.streaming.api.operators.AbstractStreamOperator.initializeState(AbstractStreamOperator.java:199)
at org.apache.flink.streaming.runtime.tasks.StreamTask.initializeOperators(StreamTask.java:666)
at org.apache.flink.streaming.runtime.tasks.StreamTask.initializeState(StreamTask.java:654)
at org.apache.flink.streaming.runtime.tasks.StreamTask.invoke(StreamTask.java:257)
at org.apache.flink.runtime.taskmanager.Task.run(Task.java:655)
at java.lang.Thread.run(Thread.java:745)

Caused by: java.lang.Exception: Could not load the native RocksDB library
at org.apache.flink.contrib.streaming.state.RocksDBStateBackend.ensureRocksDBIsLoaded(RocksDBStateBackend.java:483)
at org.apache.flink.contrib.streaming.state.RocksDBStateBackend.createKeyedStateBackend(RocksDBStateBackend.java:235)
at org.apache.flink.streaming.runtime.tasks.StreamTask.createKeyedStateBackend(StreamTask.java:785)
at org.apache.flink.streaming.api.operators.AbstractStreamOperator.initKeyedState(AbstractStreamOperator.java:277)
... 6 more

Caused by: java.lang.UnsatisfiedLinkError: /data/hadoop/tmp/rocksdb-lib-32bc6a5551b331596649309a808b287d/librocksdbjni-linux64.so: /data/hadoop/tmp/rocksdb-lib-32bc6a5551b331596649309a808b287d/librocksdbjni-linux64.so: ELF file data encoding not big-endian (Possible cause: endianness mismatch)
at java.lang.ClassLoader$NativeLibrary.load(Native Method)
at java.lang.ClassLoader.loadLibrary0(ClassLoader.java:1941)
at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1824)
at java.lang.Runtime.load0(Runtime.java:809)
at java.lang.System.load(System.java:1086)
at org.rocksdb.NativeLibraryLoader.loadLibraryFromJar(NativeLibraryLoader.java:78)
at org.rocksdb.NativeLibraryLoader.loadLibrary(NativeLibraryLoader.java:56)
at org.apache.flink.contrib.streaming.state.RocksDBStateBackend.ensureRocksDBIsLoaded(RocksDBStateBackend.java:460)

I have tried setting the rocksDB state backend at cluster level and job level. when it is set at job level, I have provided it as a shaded dependency. I have tried compiling the code on the host cluster machine as well. I get the same error in all the cases. 

ELF file data encoding not big-endian (Possible cause: endianness mismatch)

How can I solve this error?

Thanks in advance
Ziyad




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