[
https://issues.apache.org/jira/browse/HBASE-12065?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14150390#comment-14150390
]
Lars Hofhansl commented on HBASE-12065:
---------------------------------------
So looking at the patch... If we even get into a situation where we read a
column delete marker followed by a family delete marker for the same row, we'd
overwrite the column marker and hence not store it.
Not sure that would happen normally, but it is possible as we have not
guarantees about this when reading from a sequence file.
Looks good otherwise.
> Import tool is not restoring multiple DeleteFamily markers of a row
> --------------------------------------------------------------------
>
> Key: HBASE-12065
> URL: https://issues.apache.org/jira/browse/HBASE-12065
> Project: HBase
> Issue Type: Bug
> Components: util
> Affects Versions: 0.98.2
> Reporter: Maddineni Sukumar
> Assignee: Maddineni Sukumar
> Priority: Minor
> Attachments: hbase-12065-fix-2.patch, hbase-12065-fix.patch,
> hbase-12065-unit-test.patch
>
>
> When a row has more than one DeleteFamily markers, Import tool is not
> restoring all DeleteFamily markers.
> Scenario: Insert entries into hbase in below order
> Put Row1 with Value-A
> Delete Row1 with DeleteFamily Marker
> Put Row1 with Value-B
> Delete Row1 with DeleteFamily Marker
> Using Export tool export this data and Import it into another table, you will
> see below entries
> Delete Row1 with DeleteFamily Marker
> Put Row1 with Value-B
> Put Row1 with Value-A
> One DeleteFamily marker is missing here... In Import tool,
> Importer.writeResult() method we are batching all deletes into a single
> Delete request and pushing into hbase. Here we are pushing only one delete
> family marker into hbase table.
> I tried same with normal HTable.delete command also.
> If you pass multiple DeleteFamily markers of a row in a single Delete request
> to hbase then table is maintaining only one.
> If that is the expected behavior of hbase then we should change logic in
> Import tool to push DeleteFamily markers individually one by one.
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
