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https://issues.apache.org/jira/browse/HDFS-5568?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13833299#comment-13833299
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Vinay commented on HDFS-5568:
-----------------------------
bq. One comment is the following code cannot cover the case that the initial
given path for fsck is under a snapshottable directory.
Yes. -includeSnapshots is to include the ".snapshot" directory and its tree if
the path is a snapshottable directory. Not to find out the corresponding
snapshot path of directory/files under a snapshottable directory and include
them in fsck report. If the path is not exactly a snapshottable directory or a
parent of it, then fsck will not include any ".snapshot" paths in it.
> Support inclusion of snapshot paths in Namenode fsck
> ----------------------------------------------------
>
> Key: HDFS-5568
> URL: https://issues.apache.org/jira/browse/HDFS-5568
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: snapshots
> Reporter: Vinay
> Assignee: Vinay
> Attachments: HDFS-5568-1.patch, HDFS-5568.patch, HDFS-5568.patch
>
>
> Support Fsck to check the snapshot paths also for inconsistency.
> Currently Fsck supports snapshot paths if path given explicitly refers to a
> snapshot path.
> We have seen safemode problems in our clusters which were due to blocks
> missing which were only present inside snapshots. But "hdfs fsck /" shows
> HEALTHY.
> So supporting snapshot paths also during fsck (may be by default or on
> demand) would be helpful in these cases instead of specifying each and every
> snapshottable directory.
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