Arun C Murthy
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[HADOOP-9747] Reduce unnecessary UGI synchronization
...Jstacks of heavily loaded NNs show up to dozens of threads blocking in the UGI....
, 2018-03-20, 18:17
[HADOOP-9363] AuthenticatedURL will NPE if server closes connection
...A NPE occurs if the server unexpectedly closes the connection for an AuthenticatedURL w/o sending a response....
, 2018-03-20, 18:17
[HADOOP-14687] AuthenticatedURL will reuse bad/expired session cookies
...AuthenticatedURL with kerberos was designed to perform spnego, then use a session cookie to avoid renegotiation overhead. Unfortunately the client will continue to use a cookie after i...
, 2018-03-16, 02:10
[VOTE] Merging branch HDFS-7240 to trunk
- [mail # dev]
...I’m generally neutral and looked foremost at developer impact. Ie. Willit be so intertwined with hdfs that each project risks destabilizing theother? Will developers with n...
, 2018-03-02, 01:33
[HADOOP-15212] Add independent secret manager method for logging expired tokens
...AbstractDelegationTokenSecretManager#removeExpiredToken has two phases. First phase synchronizes to collect expired tokens. Second phase loops over the collected tokens to log th...
, 2018-02-06, 21:53
[HADOOP-12861] RPC client fails too quickly when server connection limit is reached
...The NN's rpc server immediately closes new client connections when a connection limit is reached. The client rapidly retries a small number of times with no delay which causes clients to fai...
, 2017-12-15, 20:21
[HADOOP-9161] FileSystem.moveFromLocalFile fails to remove source
...FileSystem.moveFromLocalFile fails with cannot remove file:/path after copying the files. It appears to be trying to remove a file uri as a relative path....
, 2017-11-03, 15:50
[HADOOP-14912] FairCallQueue may defer servicing calls
...HADOOP-14033 switched a lock to a semaphore to allow concurrency for producers & consumers to the underlying queues. A race condition was created that may cause a consumer to acqui...
, 2017-10-10, 20:26
[HADOOP-13052] ChecksumFileSystem mishandles crc file permissions
...CheckFileSystem does not override permission related calls to apply those operations to the hidden crc files. Clients may be unable to read the crcs if the file is created with strict ...
, 2017-10-10, 14:39
[HADOOP-14033] Reduce fair call queue lock contention
...Under heavy load the call queue may run dry yet clients experience high latency.The fcq requires producers and consumers to sync via a shared lock. Polling consumers hold the lock whil...
, 2017-09-27, 21:18
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