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https://issues.apache.org/jira/browse/HDFS-16187?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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ASF GitHub Bot updated HDFS-16187:
----------------------------------
    Labels: pull-request-available  (was: )

> SnapshotDiff behaviour with Xattrs and Acls is not consistent across NN 
> restarts with checkpointing
> ---------------------------------------------------------------------------------------------------
>
>                 Key: HDFS-16187
>                 URL: https://issues.apache.org/jira/browse/HDFS-16187
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: snapshots
>            Reporter: Srinivasu Majeti
>            Assignee: Shashikant Banerjee
>            Priority: Major
>              Labels: pull-request-available
>          Time Spent: 10m
>  Remaining Estimate: 0h
>
> The below test shows the snapshot diff between across snapshots is not 
> consistent with Xattr(EZ here settinh the Xattr) across NN restarts with 
> checkpointed FsImage.
> {code:java}
> @Test
> public void testEncryptionZonesWithSnapshots() throws Exception {
>   final Path snapshottable = new Path("/zones");
>   fsWrapper.mkdir(snapshottable, FsPermission.getDirDefault(),
>       true);
>   dfsAdmin.allowSnapshot(snapshottable);
>   dfsAdmin.createEncryptionZone(snapshottable, TEST_KEY, NO_TRASH);
>   fs.createSnapshot(snapshottable, "snap1");
>   SnapshotDiffReport report =
>       fs.getSnapshotDiffReport(snapshottable, "snap1", "");
>   Assert.assertEquals(0, report.getDiffList().size());
>   report =
>       fs.getSnapshotDiffReport(snapshottable, "snap1", "");
>   System.out.println(report);
>   Assert.assertEquals(0, report.getDiffList().size());
>   fs.setSafeMode(SafeModeAction.SAFEMODE_ENTER);
>   fs.saveNamespace();
>   fs.setSafeMode(SafeModeAction.SAFEMODE_LEAVE);
>   cluster.restartNameNode(true);
>   report =
>       fs.getSnapshotDiffReport(snapshottable, "snap1", "");
>   Assert.assertEquals(0, report.getDiffList().size());
> }{code}
> {code:java}
> Pre Restart:
> Difference between snapshot snap1 and current directory under directory 
> /zones:
> Post Restart:
> Difference between snapshot snap1 and current directory under directory 
> /zones:
> M .{code}



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