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https://issues.apache.org/jira/browse/HDFS-12914?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16866082#comment-16866082
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Hudson commented on HDFS-12914:
-------------------------------
SUCCESS: Integrated in Jenkins build Hadoop-trunk-Commit #16762 (See
[https://builds.apache.org/job/Hadoop-trunk-Commit/16762/])
Revert "HDFS-12914. Addendum patch. Block report leases cause missing (weichiu:
rev a50c35bb81105936dc0129b81f913e7307e306fc)
* (delete)
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/blockmanagement/TestBlockReportLease.java
Revert "HDFS-12914. Block report leases cause missing blocks until next
(weichiu: rev 7314185c4a313842115e18b5f42d118392cee929)
* (edit)
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/blockmanagement/BlockManager.java
* (edit)
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/NameNodeRpcServer.java
HDFS-12914. Block report leases cause missing blocks until next report.
(weichiu: rev 6822193ee6d6ac8b08822fa76c89e1dd61c5ddca)
* (edit)
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/blockmanagement/BlockManager.java
* (add)
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/blockmanagement/TestBlockReportLease.java
* (edit)
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/NameNodeRpcServer.java
> Block report leases cause missing blocks until next report
> ----------------------------------------------------------
>
> Key: HDFS-12914
> URL: https://issues.apache.org/jira/browse/HDFS-12914
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: namenode
> Affects Versions: 2.8.0, 2.9.2
> Reporter: Daryn Sharp
> Assignee: Santosh Marella
> Priority: Critical
> Fix For: 3.3.0, 3.2.1
>
> Attachments: HDFS-12914-branch-2.001.patch,
> HDFS-12914-trunk.00.patch, HDFS-12914-trunk.01.patch, HDFS-12914.005.patch,
> HDFS-12914.006.patch, HDFS-12914.007.patch, HDFS-12914.008.patch,
> HDFS-12914.009.patch, HDFS-12914.branch-3.2.patch, HDFS-12914.utfix.patch
>
>
> {{BlockReportLeaseManager#checkLease}} will reject FBRs from DNs for
> conditions such as "unknown datanode", "not in pending set", "lease has
> expired", wrong lease id, etc. Lease rejection does not throw an exception.
> It returns false which bubbles up to {{NameNodeRpcServer#blockReport}} and
> interpreted as {{noStaleStorages}}.
> A re-registering node whose FBR is rejected from an invalid lease becomes
> active with _no blocks_. A replication storm ensues possibly causing DNs to
> temporarily go dead (HDFS-12645), leading to more FBR lease rejections on
> re-registration. The cluster will have many "missing blocks" until the DNs
> next FBR is sent and/or forced.
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