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https://issues.apache.org/jira/browse/HIVE-16813?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16037291#comment-16037291
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Sankar Hariappan edited comment on HIVE-16813 at 6/5/17 6:00 PM:
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Added 01.patch with below changes.
- Added a custom comparator (EventDumpDirComparator) to sort the directories
listed during REPL LOAD. It compares the dir length before comparing the
directory name Strings.
- Added unit tests to verify the new comparator and also to verify the bug with
default FileStatus comparator.
Request [~anishek] / [~sushanth] to kindly review the patch!
cc [~thejas]
was (Author: sankarh):
Added 01.patch with below changes.
- Added a custom comparator (EventDumpDirComparator) to sort the directories
listed during REPL LOAD. It compares the dir length before comparing the
directory name Strings.
- Added unit tests to verify the new comparator and also to verify the bug with
default FileStatus comparator.
> Incremental REPL LOAD should load the events in the same sequence as it is
> dumped.
> ----------------------------------------------------------------------------------
>
> Key: HIVE-16813
> URL: https://issues.apache.org/jira/browse/HIVE-16813
> Project: Hive
> Issue Type: Sub-task
> Components: Hive, repl
> Affects Versions: 2.1.0
> Reporter: Sankar Hariappan
> Assignee: Sankar Hariappan
> Labels: DR, replication
> Attachments: HIVE-16813.01.patch
>
>
> Currently, incremental REPL DUMP use $dumpdir/<eventID> to dump the metadata
> and data files corresponding to the event. The event is dumped in the same
> sequence in which it was generated.
> Now, REPL LOAD, lists the directories inside $dumpdir using listStatus and
> sort it using compareTo algorithm of FileStatus class which doesn't check the
> length before sorting it alphabetically.
> Due to this, the event-100 is processed before event-99 and hence making the
> replica database non-sync with source.
> Need to use a customized compareTo algorithm to sort the FileStatus.
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