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https://issues.apache.org/jira/browse/HBASE-5088?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13181870#comment-13181870
]
Hudson commented on HBASE-5088:
-------------------------------
Integrated in HBase-0.92 #229 (See
[https://builds.apache.org/job/HBase-0.92/229/])
HBASE-5088 A concurrency issue on SoftValueSortedMap (Jieshan Bean and Lars
H)
larsh :
Files :
* /hbase/branches/0.92/CHANGES.txt
*
/hbase/branches/0.92/src/main/java/org/apache/hadoop/hbase/client/HConnectionManager.java
*
/hbase/branches/0.92/src/main/java/org/apache/hadoop/hbase/util/SoftValueSortedMap.java
> A concurrency issue on SoftValueSortedMap
> -----------------------------------------
>
> Key: HBASE-5088
> URL: https://issues.apache.org/jira/browse/HBASE-5088
> Project: HBase
> Issue Type: Bug
> Components: client
> Affects Versions: 0.90.4, 0.94.0
> Reporter: Jieshan Bean
> Assignee: Lars Hofhansl
> Priority: Critical
> Fix For: 0.92.0, 0.94.0
>
> Attachments: 5088-final.txt, 5088-final2.txt, 5088-final3.txt,
> 5088-syncObj.txt, 5088-useMapInterfaces.txt, 5088.generics.txt,
> HBase-5088-90.patch, HBase-5088-trunk.patch,
> HBase5088-90-replaceSoftValueSortedMap.patch,
> HBase5088-90-replaceTreeMap.patch, HBase5088-trunk-replaceTreeMap.patch,
> HBase5088Reproduce.java, PerformanceTestResults.png
>
>
> SoftValueSortedMap is backed by a TreeMap. All the methods in this class are
> synchronized. If we use this method to add/delete elements, it's ok.
> But in HConnectionManager#getCachedLocation, it use headMap to get a view
> from SoftValueSortedMap#internalMap. Once we operate
> on this view map(like add/delete) in other threads, a concurrency issue may
> occur.
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