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https://issues.apache.org/jira/browse/RANGER-1501?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16113548#comment-16113548
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Ramesh Mani edited comment on RANGER-1501 at 8/3/17 10:08 PM:
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reopen to do submit a improvement patch on top of this patch
Review link:https://reviews.apache.org/r/61419/
was (Author: rmani):
reopen to do submit a improvement patch on top of this patch
> Audit Flush to HDFS does not actually cause the audit logs to be flushed to
> HDFS
> ---------------------------------------------------------------------------------
>
> Key: RANGER-1501
> URL: https://issues.apache.org/jira/browse/RANGER-1501
> Project: Ranger
> Issue Type: Bug
> Components: audit
> Affects Versions: 0.7.0
> Reporter: Yan
> Assignee: Yan
> Fix For: 1.0.0
>
> Attachments:
> 0001-RANGER-1501-Audit-Flush-to-HDFS-does-not-actually-ca.patch,
> 0001-RANGER-1501-Audit-Flush-to-HDFS-improvement.patch
>
>
> The reason is that HDFS file stream's flush() call does not really flush the
> data all the way to disk, nor even makes the data visible to HDFS users. See
> the HDFS semantics of the flush/sync at
> https://issues.apache.org/jira/browse/HADOOP-6313.
> Consequently the audit logs on HDFS won't be visible/durable from HDFS client
> until the log file is closed. This will, among other issues, boost chances of
> losing audit logs in case of system failure.
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