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https://issues.apache.org/jira/browse/HBASE-13347?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Abhishek Singh Chouhan updated HBASE-13347:
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Assignee: Abhishek Singh Chouhan
Affects Version/s: (was: 1.0.0)
2.0.0
Priority: Minor (was: Major)
Fix Version/s: (was: 1.0.4)
(was: 1.1.4)
(was: 1.2.1)
Description:
The {{RowCounter}} in the {{mapreduce}} package uses
{{FirstKeyValueMatchingQualifiersFilter}} which was introduced in HBASE-6468.
However we do not need that since we match columns in the scan before we filter.
Deprecate the filter in 2.0 and remove in 3.0.
Do cleanup of RowCounter that tries to use this filter but actually doesn't.
was:
The {{RowCounter}} in the {{mapreduce}} package is supposed to check if the row
count scan has a column selection added to it, and if so, use a different
filter that finds the row and counts it. But the {{qualifier.add()}} call is
missing in the {{for}} loop. See
https://github.com/apache/hbase/blob/master/hbase-server/src/main/java/org/apache/hadoop/hbase/mapreduce/RowCounter.java#L165
Needs fixing or row count might be wrong when using {{--range}}.
Component/s: (was: mapreduce)
Issue Type: Improvement (was: Bug)
Summary: Deprecate FirstKeyValueMatchingQualifiersFilter (was:
RowCounter using special filter is broken)
> Deprecate FirstKeyValueMatchingQualifiersFilter
> -----------------------------------------------
>
> Key: HBASE-13347
> URL: https://issues.apache.org/jira/browse/HBASE-13347
> Project: HBase
> Issue Type: Improvement
> Affects Versions: 2.0.0
> Reporter: Lars George
> Assignee: Abhishek Singh Chouhan
> Priority: Minor
> Fix For: 2.0.0, 1.3.0
>
> Attachments: HBASE-13347-master.patch
>
>
> The {{RowCounter}} in the {{mapreduce}} package uses
> {{FirstKeyValueMatchingQualifiersFilter}} which was introduced in HBASE-6468.
> However we do not need that since we match columns in the scan before we
> filter.
> Deprecate the filter in 2.0 and remove in 3.0.
> Do cleanup of RowCounter that tries to use this filter but actually doesn't.
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