Colin Patrick McCabe
Tsz Wo Nicholas Sze
Aaron T. Myers
Brahma Reddy Battula
Uma Maheswara Rao G
Surendra Singh Lilhore
Rushabh S Shah
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[HDFS-5264] Consider renaming StorageID
...We should consider renaming StorageID to something else since we have changed the meaning of the field. Previously it was used to identify the single logical storage attached to a datanode a...
, 2015-04-07, 00:05
[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
Re: 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
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