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https://issues.apache.org/jira/browse/HADOOP-2?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14681176#comment-14681176
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Hudson commented on HADOOP-2:
-----------------------------
FAILURE: Integrated in HBase-0.98 #1072 (See
[https://builds.apache.org/job/HBase-0.98/1072/])
HBASE-5878 Use getVisibleLength public api from HdfsDataInputStream from
Hadoop-2. (apurtell: rev b69569f512068d795199310ce662ab381bb6b6b7)
*
hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/wal/SequenceFileLogReader.java
Revert "HBASE-5878 Use getVisibleLength public api from HdfsDataInputStream
from Hadoop-2." (apurtell: rev fabfb423f9cf48ddd52e9583ca66600004f42349)
*
hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/wal/SequenceFileLogReader.java
> Reused Keys and Values fail with a Combiner
> -------------------------------------------
>
> Key: HADOOP-2
> URL: https://issues.apache.org/jira/browse/HADOOP-2
> Project: Hadoop Common
> Issue Type: Bug
> Reporter: Owen O'Malley
> Assignee: Owen O'Malley
> Fix For: 0.1.0
>
> Attachments: clone-map-output.patch
>
>
> If the map function reuses the key or value by destructively modifying it
> after the output.collect(key,value) call and your application uses a
> combiner, the data is corrupted by having lots of instances with the last key
> or value.
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