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https://issues.apache.org/jira/browse/HDFS-9696?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15420974#comment-15420974
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Kihwal Lee commented on HDFS-9696:
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{noformat}
-------------------------------------------------------
T E S T S
-------------------------------------------------------
Running org.apache.hadoop.hdfs.TestLeaseRecovery2
Tests run: 7, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 88.065 sec - in
org.apache.hadoop.hdfs.TestLeaseRecovery2
Running org.apache.hadoop.hdfs.TestPersistBlocks
Tests run: 5, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 28.3 sec - in
org.apache.hadoop.hdfs.TestPersistBlocks
{noformat}
The failed test cases all pass when rerun. {{TestPersistBlocks}} was reported
in HDFS-5770.
> Garbage snapshot records lingering forever
> ------------------------------------------
>
> Key: HDFS-9696
> URL: https://issues.apache.org/jira/browse/HDFS-9696
> Project: Hadoop HDFS
> Issue Type: Bug
> Affects Versions: 2.7.2
> Reporter: Kihwal Lee
> Assignee: Kihwal Lee
> Priority: Critical
> Attachments: HDFS-9696.patch, HDFS-9696.v2.patch
>
>
> We have a cluster where the snapshot feature might have been tested years
> ago. When the HDFS does not have any snapshot, but I see filediff records
> persisted in its fsimage. Since it has been restarted many times and
> checkpointed over 100 times since then, it must haven been persisted and
> carried over since then.
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