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https://issues.apache.org/jira/browse/HBASE-17872?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15962246#comment-15962246
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Hudson commented on HBASE-17872:
--------------------------------
FAILURE: Integrated in Jenkins build HBase-Trunk_matrix #2829 (See
[https://builds.apache.org/job/HBase-Trunk_matrix/2829/])
HBASE-17872 The MSLABImpl generates the invaild cells when unsafe is not
(chia7712: rev df96d328fb9fa11f04f84607e9a23f254f513202)
* (add)
hbase-server/src/test/java/org/apache/hadoop/hbase/util/TestFromClientSide3WoUnsafe.java
* (edit)
hbase-common/src/main/java/org/apache/hadoop/hbase/util/ByteBufferUtils.java
* (edit)
hbase-common/src/test/java/org/apache/hadoop/hbase/util/TestByteBufferUtils.java
> The MSLABImpl generates the invaild cells when unsafe is not availble
> ---------------------------------------------------------------------
>
> Key: HBASE-17872
> URL: https://issues.apache.org/jira/browse/HBASE-17872
> Project: HBase
> Issue Type: Sub-task
> Reporter: Chia-Ping Tsai
> Assignee: Chia-Ping Tsai
> Priority: Critical
> Fix For: 2.0.0
>
> Attachments: HBASE-17872.v0.patch, HBASE-17872.v1.patch,
> HBASE-17872.v2.patch, HBASE-17872.v3.patch, HBASE-17872.v4.patch
>
>
> We will get the wrong position of buffer in multithreaded environment, so the
> method makes the invalid cell in MSLAB.
> {noformat}
> public static int copyFromBufferToBuffer(ByteBuffer in, ByteBuffer out, int
> sourceOffset,
> int destinationOffset, int length) {
> if (in.hasArray() && out.hasArray()) {
> // ...
> } else if (UNSAFE_AVAIL) {
> // ...
> } else {
> int outOldPos = out.position();
> out.position(destinationOffset);
> ByteBuffer inDup = in.duplicate();
> inDup.position(sourceOffset).limit(sourceOffset + length);
> out.put(inDup);
> out.position(outOldPos);
> }
> return destinationOffset + length;
> }
> {noformat}
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