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[HDFS-7944] Minor cleanup of BlockPoolManager#getAllNamenodeThreads
...BlockPoolManager#getAllNamenodeThreads can avoid unnecessary list to array conversion and vice versa by returning an unmodifiable list.Since NN addition/removal is relatively rare we can jus...
, 2015-03-31, 19:43
[HDFS-7924] NameNode goes into infinite lease recovery
...We encountered an HDFS lease recovery issue. All DataNodes+NameNodes were restarted while a client was running. A block was created on the NN but it had not yet been created on DNs. The NN t...
, 2015-03-13, 08:11
[HDFS-7757] Misleading error messages in FSImage.java
...If a quota violation is detected while loading an image, the NameNode logs scary error messages indicating a bug. However the quota violation state is very easy to get into e.g. Copy a 2MB f...
, 2015-03-04, 15:35
[HDFS-7503] Namenode restart after large deletions can cause slow processReport (due to logging)
...If a large directory is deleted and namenode is immediately restarted, there are a lot of blocks that do not belong to any file. This results in a log:2014-11-08 03:11:45,584 INFO BlockState...
, 2015-02-20, 17:46
Erratic Jenkins behavior
- [mail # dev]
...Sorry I don¹t have much insight into this either. Our Jenkins setup is abit of a black box to me.Too few of us have access to the build hosts and it makes debuggingdifficult. Perhaps we shou...
, 2015-02-09, 20:26
[HDFS-7734] Class cast exception in NameNode#main
...NameNode hits the following exception immediately on startup.15/02/03 15:50:25 ERROR namenode.NameNode: Failed to start namenode.java.lang.ClassCastException: org.apache.log4j.Logger cannot ...
, 2015-02-05, 15:24
[HDFS-7643] Test case to ensure lazy persist files cannot be truncated
...Task to add test case for HDFS-7634. Ensure that an attempt to truncate a file created with LAZY_PERSIST policy is failed by the NameNode. For reference see TestLazyPersistFiles#testAppendIs...
, 2015-01-25, 01:58
[HDFS-5423] Verify initializations of LocatedBlock/RecoveringBlock
...Tracking Jira to make sure we verify initialization of LocatedBlock and RecoveringBlock, possibly reorg the constructors to make missing initialization of StorageIDs less likely....
, 2015-01-21, 19:53
[HDFS-5153] Datanode should send block reports for each storage in a separate message
...When the number of blocks on the DataNode grows large we start running into a few issues: Block reports take a long time to process on the NameNode. In testing we have seen that a block repo...
, 2015-01-08, 23:35
[HDFS-7572] TestLazyPersistFiles#testDnRestartWithSavedReplicas is flaky on Windows
...Error MessageExpected: is <DISK> but: was <RAM_DISK>Stacktracejava.lang.AssertionError: Expected: is <DISK> but: was <RAM_DISK> ...
, 2015-01-06, 21:12
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