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Arun C Murthy
Colin Patrick McCabe
Brahma Reddy Battula
Aaron T. Myers
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[HDFS-7304] TestFileCreation#testOverwriteOpenForWrite hangs
...The test case times out. It has been observed in multiple pre-commit builds....
, 2017-10-11, 23:22
[HDFS-7174] Support for more efficient large directories
...When the number of children under a directory grows very large, insertion becomes very costly. E.g. creating 1M entries takes 10s of minutes. This is because the complexity of an...
, 2017-10-10, 20:31
[HDFS-9003] ForkJoin thread pool leaks
...The pool is not shutdown, so each time a standby NN initializes the quota, the pool leaks....
, 2017-10-02, 23:26
[HDFS-8865] Improve quota initialization performance
...After replaying edits, the whole file system tree is recursively scanned in order to initialize the quota. For big name space, this can take a very long time. Since this is done during...
, 2017-10-02, 22:55
[HDFS-12441] Suppress UnresolvedPathException in namenode log
...UnresolvedPathException as a normal process of resolving symlinks. This doesn't need to be logged at all....
, 2017-09-15, 19:58
[HDFS-12008] Improve the available-space block placement policy
...AvailableSpaceBlockPlacementPolicy currently picks two nodes unconditionally, then picks one node. It could avoid picking the second node when not necessary....
, 2017-09-11, 08:03
[HDFS-10763] Open files can leak permanently due to inconsistent lease update
...This can heppen during commitBlockSynchronization() or a client gives up on closing a file after retries.From finalizeINodeFileUnderConstruction(), the lease is removed first and then the in...
, 2017-09-01, 00:43
[HDFS-10480] Add an admin command to list currently open files
...Currently there is no easy way to obtain the list of active leases or files being written. It will be nice if we have an admin command to list open files and their lease holders....
, 2017-08-31, 23:11
[HDFS-11069] Tighten the authorization of datanode RPC
...The current implementation of checkSuperuserPrivilege() allows the datanode user from any node to be recognized as a super user. If one datanode is compromised, the intruder can issue ...
, 2017-08-30, 17:01
[HDFS-9802] Selectively save blocks to trash dir during rolling upgrades
...Currently datanodes save any invalidated blocks to the trash directory during a rolling upgrade. Compared to the "previous" directory for full upgrade, the trash can grow quickly. This is es...
, 2017-08-24, 14:22
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