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https://issues.apache.org/jira/browse/HDDS-4164?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17213347#comment-17213347
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Bharat Viswanadham commented on HDDS-4164:
------------------------------------------
Annotation of methods is just for representational purpose, when I digged in to
Rpc code this annotation presence check is happened, but not used.
And also in OM Client protocol, we have only a single RPC method
*submitRequest*, so marking with @Idempotent/ @AT_MOST_ONCE is for
representational purpose, and it will not help in any way. So, planned to skip
marking the methods with annotation.
In NN, all methods which are non-idempotent, they use the cache, in ozone all
write requests use Ratis Retry cache, so it means all write requests use cache
by default.
> OM client request fails with "failed to commit as key is not found in OpenKey
> table"
> ------------------------------------------------------------------------------------
>
> Key: HDDS-4164
> URL: https://issues.apache.org/jira/browse/HDDS-4164
> Project: Hadoop Distributed Data Store
> Issue Type: Bug
> Components: OM HA
> Reporter: Lokesh Jain
> Assignee: Bharat Viswanadham
> Priority: Blocker
>
> OM client request fails with "failed to commit as key is not found in OpenKey
> table"
> {code:java}
> 20/08/28 03:21:53 WARN retry.RetryInvocationHandler: A failover has occurred
> since the start of call #28868 $Proxy17.submitRequest over
> nodeId=om3,nodeAddress=vc1330.halxg.cloudera.com:9862
> 20/08/28 03:21:53 WARN retry.RetryInvocationHandler: A failover has occurred
> since the start of call #28870 $Proxy17.submitRequest over
> nodeId=om1,nodeAddress=vc1325.halxg.cloudera.com:9862
> 20/08/28 03:21:53 WARN retry.RetryInvocationHandler: A failover has occurred
> since the start of call #28869 $Proxy17.submitRequest over
> nodeId=om1,nodeAddress=vc1325.halxg.cloudera.com:9862
> 20/08/28 03:21:54 WARN retry.RetryInvocationHandler: A failover has occurred
> since the start of call #28871 $Proxy17.submitRequest over
> nodeId=om1,nodeAddress=vc1325.halxg.cloudera.com:9862
> 20/08/28 03:21:54 WARN retry.RetryInvocationHandler: A failover has occurred
> since the start of call #28872 $Proxy17.submitRequest over
> nodeId=om1,nodeAddress=vc1325.halxg.cloudera.com:9862
> 20/08/28 03:21:54 WARN retry.RetryInvocationHandler: A failover has occurred
> since the start of call #28866 $Proxy17.submitRequest over
> nodeId=om1,nodeAddress=vc1325.halxg.cloudera.com:9862
> 20/08/28 03:21:54 WARN retry.RetryInvocationHandler: A failover has occurred
> since the start of call #28867 $Proxy17.submitRequest over
> nodeId=om1,nodeAddress=vc1325.halxg.cloudera.com:9862
> 20/08/28 03:21:54 WARN retry.RetryInvocationHandler: A failover has occurred
> since the start of call #28874 $Proxy17.submitRequest over
> nodeId=om1,nodeAddress=vc1325.halxg.cloudera.com:9862
> 20/08/28 03:21:54 WARN retry.RetryInvocationHandler: A failover has occurred
> since the start of call #28875 $Proxy17.submitRequest over
> nodeId=om1,nodeAddress=vc1325.halxg.cloudera.com:9862
> 20/08/28 03:21:54 ERROR freon.BaseFreonGenerator: Error on executing task
> 14424
> KEY_NOT_FOUND org.apache.hadoop.ozone.om.exceptions.OMException: Failed to
> commit key, as /vol1/bucket1/akjkdz4hoj/14424/104766512182520809entry is not
> found in the OpenKey table
> at
> org.apache.hadoop.ozone.om.protocolPB.OzoneManagerProtocolClientSideTranslatorPB.handleError(OzoneManagerProtocolClientSideTranslatorPB.java:593)
> at
> org.apache.hadoop.ozone.om.protocolPB.OzoneManagerProtocolClientSideTranslatorPB.commitKey(OzoneManagerProtocolClientSideTranslatorPB.java:650)
> at
> org.apache.hadoop.ozone.client.io.BlockOutputStreamEntryPool.commitKey(BlockOutputStreamEntryPool.java:306)
> at
> org.apache.hadoop.ozone.client.io.KeyOutputStream.close(KeyOutputStream.java:514)
> at
> org.apache.hadoop.ozone.client.io.OzoneOutputStream.close(OzoneOutputStream.java:60)
> at
> org.apache.hadoop.ozone.freon.OzoneClientKeyGenerator.lambda$createKey$0(OzoneClientKeyGenerator.java:118)
> at com.codahale.metrics.Timer.time(Timer.java:101)
> at
> org.apache.hadoop.ozone.freon.OzoneClientKeyGenerator.createKey(OzoneClientKeyGenerator.java:113)
> at
> org.apache.hadoop.ozone.freon.BaseFreonGenerator.tryNextTask(BaseFreonGenerator.java:178)
> at
> org.apache.hadoop.ozone.freon.BaseFreonGenerator.taskLoop(BaseFreonGenerator.java:167)
> at
> org.apache.hadoop.ozone.freon.BaseFreonGenerator.lambda$startTaskRunners$0(BaseFreonGenerator.java:150)
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
> at java.lang.Thread.run(Thread.java:748)
> {code}
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