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[HDFS-9411] HDFS NodeLabel support
...HDFS currently stores data blocks on different datanodes chosen by BlockPlacement Policy. These datanodes are random within the scope(local-rack/different-rack/nodegroup) of network topology...
, 2016-09-15, 17:46
[DISCUSS] Retire BKJM from trunk?
- [mail # dev]
...Hi All, BKJM was Active and made much stable when the NameNode HA was implemented and there was no QJM implemented. Now QJM is present and is much stable which is ado...
, 2016-07-27, 06:15
[HDFS-10614] Appended blocks can be closed even before IBRs from DataNodes
...Scenario: 1. Open the file for append() 2. Trigger append pipeline setup by adding some data. 3. Consider RECEIVING IBRs of DNs reaches NN first. &n...
, 2016-07-15, 18:00
[HDFS-10570] Remove classpath conflicts of netty-all jar in hadoop-hdfs-client
...While debugging tests in eclipse, Cannot access DN http url. Also WebHdfs tests cannot run in eclipse due to classes loading from old version of netty jars instead of netty-all jar....
, 2016-07-14, 10:03
[HDFS-9952] Expose FSNamesystem lock wait time as metrics
...Expose FSNameSystem's readlock() and writeLock() wait time as metrics....
, 2016-06-29, 14:37
[HDFS-10256] Use GenericTestUtils.getTestDir method in tests for temporary directories
, 2016-06-22, 15:23
[HDFS-10384] MiniDFSCluster doesnt support multiple HTTPS server instances
...MiniDFSCluster doesnot support Multiple instances of HTTPS servers. Because it will not use the ephemeral port for HTTPS addresses of NameNode and DataNode. So second instance will get PortA...
, 2016-05-24, 14:44
[HDFS-5113] Implement POST method to upload the checkpoint
...We have seen many issues related to Checkpoint upload. Currently upload happens with 2 GET requests.One limitation here is, both checkpointer and the target should have the http server runni...
, 2016-05-12, 18:19
[HDFS-10273] Remove duplicate logSync() and log message in FSN#enterSafemode()
...Remove duplicate logSync() and log message in FSN#enterSafemode()FSN#enterSafemode(..) // Before Editlog is in OpenForWrite mode, editLogStream will be null. So, &n...
, 2016-04-12, 18:15
[HDFS-10274] Move NameSystem#isInStartupSafeMode() to BlockManagerSafeMode
...To reduce the number of methods in Namesystem interface and for clean looking refactor, its better to move isInStartupSafeMode() to BlockManager and BlockManagerSafeMode, as most of the call...
, 2016-04-09, 09:48
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