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https://issues.apache.org/jira/browse/HDFS-7210?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Vinayakumar B updated HDFS-7210:
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Attachment: HDFS-7210-004.patch
Fixed test failures.
> Avoid two separate RPC's namenode.append() and namenode.getFileInfo() for an
> append call from DFSClient
> -------------------------------------------------------------------------------------------------------
>
> Key: HDFS-7210
> URL: https://issues.apache.org/jira/browse/HDFS-7210
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: hdfs-client, namenode
> Reporter: Vinayakumar B
> Assignee: Vinayakumar B
> Attachments: HDFS-7210-001.patch, HDFS-7210-002.patch,
> HDFS-7210-003.patch, HDFS-7210-004.patch
>
>
> Currently DFSClient does 2 RPCs to namenode for an append operation.
> {{append()}} for re-opening the file and getting the last block,
> {{getFileInfo()}} Another on to get HdfsFileState
> If we can combine result of these 2 calls and make one RPC, then it can
> reduce load on NameNode.
> For the backward compatibility we need to keep existing {{append()}} call as
> is
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