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https://issues.apache.org/jira/browse/HBASE-15287?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Matt Warhaftig updated HBASE-15287:
-----------------------------------
Attachment: hbase-15287-branch-1-v1.patch
Attached 'hbase-15287-branch-1-v1.patch' ports this patch to branch-1. Note
that TestRowCounter was not ported because the --range argument does not work
on this branch (see
[HBASE-14770|https://issues.apache.org/jira/browse/HBASE-14770?focusedCommentId=15135623&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-15135623]
for details).
> mapreduce.RowCounter returns incorrect result with binary row key inputs
> ------------------------------------------------------------------------
>
> Key: HBASE-15287
> URL: https://issues.apache.org/jira/browse/HBASE-15287
> Project: HBase
> Issue Type: Bug
> Components: mapreduce, util
> Affects Versions: 1.1.1
> Reporter: Randy Hu
> Assignee: Matt Warhaftig
> Fix For: 2.0.0, 1.4.0
>
> Attachments: 15287-v2.patch, hbase-15287-branch-1-v1.patch,
> hbase-15287-v1.patch, hbase-15287-v2.patch
>
> Original Estimate: 24h
> Remaining Estimate: 24h
>
> org.apache.hadoop.hbase.mapreduce.RowCounter takes optional start/end key as
> inputs (-range option). It would work only when the string representation of
> value is identical to the string. When row key is binary, the string
> representation of the value would look like this: "\x00\x01", which would be
> incorrect interpreted as 8 char string in the current implementation:
> https://github.com/apache/hbase/blob/master/hbase-server/src/main/java/org/apache/hadoop/hbase/mapreduce/RowCounter.java
> To fix that, we need change how the value is converted from command line
> inputs:
> Change
> scan.setStartRow(Bytes.toBytes(startKey));
> to
> scan.setStartRow(Bytes.toBytesBinary(startKey));
> Do the same conversion to end key as well.
> The issue was discovered when the utility was used to calcualte row
> distribution on regions from table with binary row keys. The hbase:meta
> contains the start key of each region in format of above example.
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