Sergey Soldatov created HDDS-14054:
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Summary: Assert error in readBlockImpl
Key: HDDS-14054
URL: https://issues.apache.org/jira/browse/HDDS-14054
Project: Apache Ozone
Issue Type: Sub-task
Components: Ozone Datanode
Affects Versions: 2.1.0
Reporter: Sergey Soldatov
Assignee: Sergey Soldatov
When readBlock functionality is used the following errors appear in the DN logs:
{code:java}
25/12/02 02:48:48 WARN
[f3fcbf75-272c-401e-afba-46e18427881c-ChunkReader-8]-keyvalue.KeyValueHandler:
Operation: ReadBlock , Trace ID: , Message: Failed to readBlock blockID {
containerID: 1
localID: 115816896921600001
blockCommitSequenceId: 2
}
offset: 0
length: 44040192
responseDataSize: 1048576
, Result: CONTAINER_INTERNAL_ERROR , StorageContainerException Occurred.
org.apache.hadoop.hdds.scm.container.common.helpers.StorageContainerException:
Failed to readBlock blockID {
containerID: 1
localID: 115816896921600001
blockCommitSequenceId: 2
}
offset: 0
length: 44040192
responseDataSize: 1048576
at
org.apache.hadoop.ozone.container.keyvalue.KeyValueHandler.readBlock(KeyValueHandler.java:2088)
at
org.apache.hadoop.ozone.container.common.impl.HddsDispatcher.streamDataReadOnly(HddsDispatcher.java:862)
at
org.apache.hadoop.ozone.container.common.transport.server.GrpcXceiverService$1.onNext(GrpcXceiverService.java:120)
at
org.apache.hadoop.ozone.container.common.transport.server.GrpcXceiverService$1.onNext(GrpcXceiverService.java:99)
at
org.apache.ratis.thirdparty.io.grpc.stub.ServerCalls$StreamingServerCallHandler$StreamingServerCallListener.onMessage(ServerCalls.java:262)
at
org.apache.ratis.thirdparty.io.grpc.ForwardingServerCallListener.onMessage(ForwardingServerCallListener.java:33)
at
org.apache.hadoop.hdds.tracing.GrpcServerInterceptor$1.onMessage(GrpcServerInterceptor.java:49)
at
org.apache.ratis.thirdparty.io.grpc.internal.ServerCallImpl$ServerStreamListenerImpl.messagesAvailableInternal(ServerCallImpl.java:334)
at
org.apache.ratis.thirdparty.io.grpc.internal.ServerCallImpl$ServerStreamListenerImpl.messagesAvailable(ServerCallImpl.java:319)
at
org.apache.ratis.thirdparty.io.grpc.internal.ServerImpl$JumpToApplicationThreadServerStreamListener$1MessagesAvailable.runInContext(ServerImpl.java:834)
at
org.apache.ratis.thirdparty.io.grpc.internal.ContextRunnable.run(ContextRunnable.java:37)
at
org.apache.ratis.thirdparty.io.grpc.internal.SerializingExecutor.run(SerializingExecutor.java:133)
at
java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1136)
at
java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)
at java.base/java.lang.Thread.run(Thread.java:840)
Caused by: java.lang.IllegalStateException: readLength = 0 <= 0
at org.apache.ratis.util.Preconditions.assertTrue(Preconditions.java:77)
at
org.apache.hadoop.ozone.container.keyvalue.KeyValueHandler.readBlockImpl(KeyValueHandler.java:2140)
at
org.apache.hadoop.ozone.container.keyvalue.KeyValueHandler.readBlock(KeyValueHandler.java:2078)
... 14 more
{code}
The reason is that we are flipping the buffer even if we read nothing.
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