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https://issues.apache.org/jira/browse/HDFS-12217?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16110008#comment-16110008
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Hudson commented on HDFS-12217:
-------------------------------
SUCCESS: Integrated in Jenkins build Hadoop-trunk-Commit #12096 (See
[https://builds.apache.org/job/Hadoop-trunk-Commit/12096/])
HDFS-12217. HDFS snapshots doesn't capture all open files when one of
(manojpec: rev 52d7bafcf49916887197436ddb0f08f021d248d9)
* (edit)
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/LeaseManager.java
* (edit)
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/protocol/SnapshotException.java
* (edit)
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/snapshot/DirectorySnapshottableFeature.java
* (edit)
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/snapshot/TestOpenFilesWithSnapshot.java
* (edit)
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSNamesystem.java
> HDFS snapshots doesn't capture all open files when one of the open files is
> deleted
> -----------------------------------------------------------------------------------
>
> Key: HDFS-12217
> URL: https://issues.apache.org/jira/browse/HDFS-12217
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: snapshots
> Affects Versions: 3.0.0-alpha1
> Reporter: Manoj Govindassamy
> Assignee: Manoj Govindassamy
> Attachments: HDFS-12217.01.patch, HDFS-12217.02.patch,
> HDFS-12217.03.patch, HDFS-12217.04.patch, HDFS-12217.05.patch
>
>
> With the fix for HDFS-11402, HDFS Snapshots can additionally capture all the
> open files. Just like all other files, these open files in the snapshots will
> remain immutable. But, sometimes it is found that snapshots fail to capture
> all the open files in the system.
> Under the following conditions, LeaseManager will fail to find INode
> corresponding to an active lease
> * a file is opened for writing (LeaseManager allots a lease), and
> * the same file is deleted while it is still open for writing and having
> active lease, and
> * the same file is not referenced in any other Snapshots/Trash
> {{INode[] LeaseManager#getINodesWithLease()}} can thus return null for few
> leases there by causing the caller to trip over and not return all the open
> files needed by the snapshot manager.
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