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https://issues.apache.org/jira/browse/HBASE-23143?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16948231#comment-16948231
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Anoop Sam John commented on HBASE-23143:
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The issue comes during flush or compaction op?
> Region Server Crash due to 2 cells out of order ( between 2 DELETEs)
> --------------------------------------------------------------------
>
> Key: HBASE-23143
> URL: https://issues.apache.org/jira/browse/HBASE-23143
> Project: HBase
> Issue Type: Bug
> Affects Versions: 1.3.2
> Reporter: Xu Cang
> Priority: Major
>
> Region Server Crash due to 2 cells out of order ( between 2 DELETEs)
>
> Caused by: java.io.IOException: Added a key not lexically larger than
> previous.
> Current cell =
> 00D7F000000xxQ10D52v00008UY6yV0057F000000bPaGT\x000000000000000000057F000000bPaG/0:TABLE1_ID/*1570095189597*/DeleteColumn/vlen=0/seqid=*2128373*,
>
> lastCell =
> 00D7F000000xxQ10D52v00008UY6yV0057F000000bPaGT\x000000000000000000057F000000bPaG/0:TABLE1_ID/*1570095165147*/DeleteColumn/vlen=0/seqid=*2128378*
>
>
> I am aware of this JIRA: https://issues.apache.org/jira/browse/HBASE-22862
> Though it's slightly different, HBASE-22862 issue was caused One Delete and
> One Put.
> This issue I am reporting is caused by 2 Deletes
>
> Has anyone seen this issue?
>
> After I read the code and debugged the test cases.
> In AbstractHFileWriter.java
> {code:java}
> int keyComp = comparator.compareOnlyKeyPortion(lastCell, cell);{code}
> This call will always ignore SequenceId. And time stamps are in the correct
> order (above case)
> And since these 2 cells have same KEY. The comparison result should be 0.
> *only possible issue I can think of is, in this code piece: in
> CellComparator.java:*
> {code:java}
> Bytes.compareTo(left.getRowArray(), left.getRowOffset(), left.getRowLength(),
> right.getRowArray(), right.getRowOffset(), right.getRowLength());{code}
> The getRowLength() returns a wrong value.
> Or the offset is messed up. (?)
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