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[HDFS-5025] Record ClientId and CallId in EditLog to enable rebuilding retry cache in case of HA failover - HDFS - [issue]
...In case of HA failover, we need to be able to rebuild the retry cache in the other Namenode. We thus need to record client id and call id in the edit log for those "AtMostOnce" operations....
http://issues.apache.org/jira/browse/HDFS-5025    Author: Jing Zhao, 2013-08-02, 06:13
[HDFS-5013] Improve HDFS HA document - HDFS - [issue]
...Currently the HA document does not contain a lot of information about how to make QJM work with security enabled. We may improve the document by adding this part in. Also, some more details ...
http://issues.apache.org/jira/browse/HDFS-5013    Author: Jing Zhao, 2013-07-26, 00:29
[HDFS-5020] Make DatanodeProtocol#blockReceivedAndDeleted idempotent - HDFS - [issue]
...Currently DatanodeProtocol#blockReceivedAndDeleted is not idempotent because pending replication maps in NN only tracks the number of the pending replicas, and a retry request about a receiv...
http://issues.apache.org/jira/browse/HDFS-5020    Author: Jing Zhao, 2013-07-24, 08:37
[HDFS-5005] Move SnapshotException and SnapshotAccessControlException to o.a.h.hdfs.protocol - HDFS - [issue]
...We should move the definition of these two exceptions to the protocol package since they can be directly passed to clients....
http://issues.apache.org/jira/browse/HDFS-5005    Author: Jing Zhao, 2013-07-18, 15:09
Re: File not found exception - HDFS - [mail # dev]
...Hi Sugato,      Do you want to read the data from hdfs? From the log it seems like you're reading data from a "RawLocalFileSystem". Maybe you need to check if you have set you...
   Author: Jing Zhao, 2013-07-15, 17:11
[HDFS-4978] Make disallowSnapshot idempotent - HDFS - [issue]
...Currently disallowSnapshot is not idempotent: an exception will be thrown when the directory is already non-snapshottable. This jira tries to make it idempotent....
http://issues.apache.org/jira/browse/HDFS-4978    Author: Jing Zhao, 2013-07-12, 15:09
Re: Regarding hsync - HDFS - [mail # dev]
...Hi Hemant,      HDFS-4213 (https://issues.apache.org/jira/browse/HDFS-4213) may be the one you're looking for. In general, an hsync which can update the file size on NN is ena...
   Author: Jing Zhao, 2013-07-11, 17:12
[HDFS-4877] Snapshot: fix the scenario where a directory is renamed under its prior descendant - HDFS - [issue]
...Suppose we have the following operations:1. rename /dir1/foo/bar to /dir2/bar22. rename /dir1/foo to /dir2/bar2/foo2I.e., we rename a directory (foo) to a child of its prior descendant (bar)...
http://issues.apache.org/jira/browse/HDFS-4877    Author: Jing Zhao, 2013-06-06, 21:30
[HDFS-4863] The root directory should be added to the snapshottable directory list while loading fsimage - HDFS - [issue]
...When the root directory is set as snapshottable, its snapshot quota is changed from 0 to a positive number. While loading fsimage we should check the root's snapshot quota and add it to snap...
http://issues.apache.org/jira/browse/HDFS-4863    Author: Jing Zhao, 2013-05-31, 06:14
[HDFS-4842] Snapshot: identify the correct prior snapshot when deleting a snapshot under a renamed subtree - HDFS - [issue]
...In our long-term running tests for snapshot we find the following bug:1. initially we have directories /test, /test/dir1 and /test/dir2/foo. 2. first take snapshot s0 and s1 on /test.3. modi...
http://issues.apache.org/jira/browse/HDFS-4842    Author: Jing Zhao, 2013-05-31, 06:03
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