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https://issues.apache.org/jira/browse/HADOOP-3336?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12595976#action_12595976
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dhruba borthakur commented on HADOOP-3336:
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The current patch assumes that the first column is the ugi, the second column
is the permissions, the third column is the command, etc,etc. We can make the
format a wee-bit forward compatible if we have it of the form
"ugi=xxx\tperm=xxx\tcmd=xxx"
Then, an application parsing this log output can determine whether the column
it is looking for exists or not.
> Direct a subset of namenode RPC events for audit logging
> ---------------------------------------------------------
>
> Key: HADOOP-3336
> URL: https://issues.apache.org/jira/browse/HADOOP-3336
> Project: Hadoop Core
> Issue Type: New Feature
> Components: dfs
> Reporter: Chris Douglas
> Fix For: 0.18.0
>
> Attachments: 3336-0.patch
>
>
> A non-persistent transaction log will permit managers of HDFS installations
> to monitor and reconstruct user activity in HDFS for forensic analysis and
> maintenance.
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