Arun C Murthy
Vinod Kumar Vavilapalli
Brahma Reddy Battula
Tsz Wo Nicholas Sze
Aaron T. Myers
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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....
, 2018-06-19, 18:02
[HADOOP-10146] Workaround JDK7 Process fd close bug
...JDK7's Process output streams have an async fd-close race bug. This manifests as commands run via o.a.h.u.Shell causing threads to hang, OOM, or cause other bizarre behavior. The...
, 2018-06-04, 17:07
[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...
, 2018-06-02, 17:40
[HADOOP-15402] Prevent double logout of UGI's LoginContext
...HADOOP-15294 worked around a LoginContext NPE resulting from a double logout by peering into the Subject. A cleaner fix is tracking whether the LoginContext is logged in....
, 2018-04-26, 21:58
[HADOOP-14035] Reduce fair call queue backoff's impact on clients
...When fcq backoff is enabled and an abusive client overflows the call queue, its connection is closed, as well as subsequent good client connections. Disconnects are very disruptive, e...
, 2018-04-24, 20:52
[HADOOP-13442] Optimize UGI group lookups
...UGI#getGroups and its usage is inefficient. The list is unnecessarily converted to multiple collections.For every invocation, the List<String> from the group provider is converte...
, 2018-04-06, 21:52
[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
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