Shashikant Banerjee created HDFS-16187:
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Summary: 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
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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