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https://issues.apache.org/jira/browse/HADOOP-15074?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16406096#comment-16406096
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Shashikant Banerjee commented on HADOOP-15074:
----------------------------------------------
I propose the following change in the DFSOutputStream#hsync api to ensure the
file size gets updated at the namenode when hsync completes.
{code:java}
@Override
public void hsync() throws IOException {
try (TraceScope ignored = dfsClient.newPathTraceScope("hsync", src)) {
flushOrSync(true, EnumSet.of(SyncFlag.UPDATE_LENGTH));
}
}{code}
[~arpitagarwal]/others, please let me know your opinion on this.
> SequenceFile#Writer flush does not update the length of the written file.
> -------------------------------------------------------------------------
>
> Key: HADOOP-15074
> URL: https://issues.apache.org/jira/browse/HADOOP-15074
> Project: Hadoop Common
> Issue Type: Bug
> Reporter: Mukul Kumar Singh
> Assignee: Shashikant Banerjee
> Priority: Major
>
> SequenceFile#Writer flush does not update the length of the file. This
> happens because as part of the flush, {{UPDATE_LENGTH}} flag is not passed to
> the DFSOutputStream#hsync.
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