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https://issues.apache.org/jira/browse/HDFS-16880?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Ayush Saxena resolved HDFS-16880.
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Resolution: Duplicate
> modify invokeSingleXXX interface in order to pass actual file src to namenode
> for debug info.
> ---------------------------------------------------------------------------------------------
>
> Key: HDFS-16880
> URL: https://issues.apache.org/jira/browse/HDFS-16880
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: rbf
> Affects Versions: 3.3.4
> Reporter: farmmamba
> Priority: Major
> Labels: pull-request-available
>
> We found lots of INFO level log like below:
> {quote}2022-12-30 15:31:04,169 INFO org.apache.hadoop.hdfs.StateChange: DIR*
> completeFile: / is closed by
> DFSClient_attempt_1671783180362_213003_m_000077_0_1102875551_1
> 2022-12-30 15:31:04,186 INFO org.apache.hadoop.hdfs.StateChange: DIR*
> completeFile: / is closed by DFSClient_NONMAPREDUCE_1198313144_27480
> {quote}
> It lost the real path of completeFile. Actually this is caused by :
>
> *org.apache.hadoop.hdfs.server.federation.router.RouterRpcClient#invokeSingle(java.lang.String,
> org.apache.hadoop.hdfs.server.federation.router.RemoteMethod)*
> In this method, it instantiates a RemoteLocationContext object:
> *RemoteLocationContext loc = new RemoteLocation(nsId, "/", "/");*
> and then execute: *Object[] params = method.getParams(loc);*
> The problem is right here, becasuse we always use new RemoteParam(), so,
> context.getDest() always return "/"; That's why we saw lots of incorrect logs.
>
> After diving into invokeSingleXXX source code, I found the following RPCs
> classified as need actual src and not need actual src.
>
> *need src path RPC:*
> addBlock、abandonBlock、getAdditionalDatanode、complete
> *not need src path RPC:*
> updateBlockForPipeline、reportBadBlocks、getBlocks、updatePipeline、invokeAtAvailableNs（invoked
> by:
> getServerDefaults、getBlockKeys、getTransactionID、getMostRecentCheckpointTxId、versionRequest、getStoragePolicies）
>
> After changes, the src can be pass to NN correctly.
>
>
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