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Posted to issues@hbase.apache.org by "Maddineni Sukumar (JIRA)" <ji...@apache.org> on 2014/09/24 11:47:33 UTC
[jira] [Updated] (HBASE-12065) Import tool is not restoring
multiple DeleteFamily markers of a row
[ https://issues.apache.org/jira/browse/HBASE-12065?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Maddineni Sukumar updated HBASE-12065:
--------------------------------------
Status: Patch Available (was: Open)
Patch with only unit test which shows what exactly is failing...
> 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
>
> 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.
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