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https://issues.apache.org/jira/browse/HDFS-13110?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16353750#comment-16353750
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Rakesh R edited comment on HDFS-13110 at 2/6/18 11:34 AM:
----------------------------------------------------------
Note: Attached patch [^HDFS-13110-HDFS-10285-00.patch], is prepared on top of
HDFS-13097 work, as latter reduces my coding effort. Please apply
[^HDFS-13097-HDFS-10285.02.patch] first , then apply this jira patch. Sorry for
the inconvenience.
was (Author: rakeshr):
Note: Attached patch [^HDFS-13110-HDFS-10285-00.patch], is prepared on top of
HDFS-13097 , as latter reduces my coding effort. Please apply
[^HDFS-13097-HDFS-10285.02.patch] first an then apply this jira patch. Sorry
for the inconvenience.
> [SPS]: Reduce the number of APIs in NamenodeProtocol used by external
> satisfier
> -------------------------------------------------------------------------------
>
> Key: HDFS-13110
> URL: https://issues.apache.org/jira/browse/HDFS-13110
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Reporter: Rakesh R
> Priority: Major
> Attachments: HDFS-13110-HDFS-10285-00.patch
>
>
> This task is to address the following [~daryn]'s comments. Please refer
> HDFS-10285 to see more detailed discussion.
> *Comment-10)*
> {quote}
> NamenodeProtocolTranslatorPB
> Most of the api changes appear unnecessary.
> IntraSPSNameNodeContext#getFileInfo swallows all IOEs, based on assumption
> that any and all IOEs means FNF which probably isn’t the intention during rpc
> exceptions.
> {quote}
> *Comment-13)*
> {quote}
> StoragePolicySatisfier
> It appears to make back-to-back calls to hasLowRedundancyBlocks and
> getFileInfo for every file. Haven’t fully groked the code, but if low
> redundancy is not the common case, then it shouldn’t be called unless/until
> needed. It looks like files that are under replicated are re-queued again?
> {quote}
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