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https://issues.apache.org/jira/browse/HDFS-3423?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13286855#comment-13286855
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Hudson commented on HDFS-3423:
------------------------------
Integrated in Hadoop-Common-trunk-Commit #2306 (See
[https://builds.apache.org/job/Hadoop-Common-trunk-Commit/2306/])
HDFS-3423. BKJM: NN startup is failing, when tries to
recoverUnfinalizedSegments() a bad inProgress_ ZNodes. Contributed by Ivan and
Uma. (Revision 1344840)
Result = SUCCESS
umamahesh :
http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1344840
Files :
*
/hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/contrib/bkjournal/src/main/java/org/apache/hadoop/contrib/bkjournal/BookKeeperEditLogInputStream.java
*
/hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/contrib/bkjournal/src/main/java/org/apache/hadoop/contrib/bkjournal/BookKeeperJournalManager.java
*
/hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/contrib/bkjournal/src/main/java/org/apache/hadoop/contrib/bkjournal/EditLogLedgerMetadata.java
*
/hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/contrib/bkjournal/src/main/java/org/apache/hadoop/contrib/bkjournal/MaxTxId.java
*
/hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/contrib/bkjournal/src/test/java/org/apache/hadoop/contrib/bkjournal/TestBookKeeperEditLogStreams.java
*
/hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/contrib/bkjournal/src/test/java/org/apache/hadoop/contrib/bkjournal/TestBookKeeperJournalManager.java
> BKJM: NN startup is failing, when tries to recoverUnfinalizedSegments() a bad
> inProgress_ ZNodes
> ------------------------------------------------------------------------------------------------
>
> Key: HDFS-3423
> URL: https://issues.apache.org/jira/browse/HDFS-3423
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Affects Versions: 3.0.0
> Reporter: Rakesh R
> Assignee: Ivan Kelly
> Fix For: 2.0.1-alpha, 3.0.0
>
> Attachments: HDFS-3423.diff, HDFS-3423.diff, HDFS-3423.diff,
> HDFS-3423.patch, HDFS-3423.patch
>
>
> Say, the InProgress_000X node is corrupted due to not writing the
> data(version, ledgerId, firstTxId) to this inProgress_000X znode. Namenode
> startup has the logic to recover all the unfinalized segments, here will try
> to read the segment and getting shutdown.
> {noformat}
> EditLogLedgerMetadata.java:
> static EditLogLedgerMetadata read(ZooKeeper zkc, String path)
> throws IOException, KeeperException.NoNodeException {
> byte[] data = zkc.getData(path, false, null);
> String[] parts = new String(data).split(";");
> if (parts.length == 3)
> ....reading inprogress metadata
> else if (parts.length == 4)
> ....reading inprogress metadata
> else
> throw new IOException("Invalid ledger entry, "
> + new String(data));
> }
> {noformat}
> Scenario:- Leaving bad inProgress_000X node ?
> Assume BKJM has created the inProgress_000X zNode and ZK is not available
> when trying to add the metadata. Now, inProgress_000X ends up with partial
> information.
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