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https://issues.apache.org/jira/browse/HADOOP-15446?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16465799#comment-16465799
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Hudson commented on HADOOP-15446:
---------------------------------
SUCCESS: Integrated in Jenkins build Hadoop-trunk-Commit #14132 (See
[https://builds.apache.org/job/Hadoop-trunk-Commit/14132/])
HADOOP-15446. WASB: PageBlobInputStream.skip breaks HBASE replication. (stevel:
rev 5b11b9fd413470e134ecdc7c50468f8c7b39fa50)
* (edit)
hadoop-tools/hadoop-azure/src/main/java/org/apache/hadoop/fs/azure/PageBlobInputStream.java
* (add)
hadoop-tools/hadoop-azure/src/test/java/org/apache/hadoop/fs/azure/ITestPageBlobInputStream.java
> WASB: PageBlobInputStream.skip breaks HBASE replication
> -------------------------------------------------------
>
> Key: HADOOP-15446
> URL: https://issues.apache.org/jira/browse/HADOOP-15446
> Project: Hadoop Common
> Issue Type: Bug
> Components: fs/azure
> Affects Versions: 2.9.0, 3.0.2
> Reporter: Thomas Marquardt
> Assignee: Thomas Marquardt
> Priority: Major
> Attachments: HADOOP-15446-001.patch, HADOOP-15446-002.patch,
> HADOOP-15446-003.patch
>
>
> Page Blobs are primarily used by HBASE. HBASE replication, which apparently
> has not been used with WASB until recently, performs non-sequential reads on
> log files using PageBlobInputStream. There are bugs in this stream
> implementation which prevent skip and seek from working properly, and
> eventually the stream state becomes corrupt and unusable.
> I believe this bug affects all releases of WASB/HADOOP. It appears to be a
> day-0 bug in PageBlobInputStream. There were similar bugs opened in the past
> (HADOOP-15042) but the issue was not properly fixed, and no test coverage was
> added.
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