[
https://issues.apache.org/jira/browse/HDFS-10797?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Sean Mackrory updated HDFS-10797:
---------------------------------
Attachment: HDFS-10797.001.patch
Attaching a patch that tries to identify files where the underlying inodes
appear in both the DELETED and CREATED portion of the snapshot's diff, and does
not count them toward the snapshot's space like it would a simply deleted file.
Also added a test case that runs through scenarios like a chain of multiple
renames, renaming a file and replacing the original file, and appends (even
though they turned out to not have anything to do with the actual bug).
> Disk usage summary of snapshots causes renamed blocks to get counted twice
> --------------------------------------------------------------------------
>
> Key: HDFS-10797
> URL: https://issues.apache.org/jira/browse/HDFS-10797
> Project: Hadoop HDFS
> Issue Type: Bug
> Reporter: Sean Mackrory
> Attachments: HDFS-10797.001.patch
>
>
> DirectoryWithSnapshotFeature.computeContentSummary4Snapshot calculates how
> much disk usage is used by a snapshot by tallying up the files in the
> snapshot that have since been deleted (that way it won't overlap with regular
> files whose disk usage is computed separately). However that is determined
> from a diff that shows moved (to Trash or otherwise) or renamed files as a
> deletion and a creation operation that may overlap with the list of blocks.
> Only the deletion operation is taken into consideration, and this causes
> those blocks to get represented twice in the disk usage tallying.
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
---------------------------------------------------------------------
To unsubscribe, e-mail: hdfs-issues-unsubscr...@hadoop.apache.org
For additional commands, e-mail: hdfs-issues-h...@hadoop.apache.org
