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[HDFS-8674] Improve performance of postponed block scans
...When a standby goes active, it marks all nodes as "stale" which will cause block invalidations for over-replicated blocks to be queued until full block reports are received from the nodes wi...
, 2016-12-01, 18:22
[HDFS-4493] webhdfs fails after SPNEGO token expires
...Webhdfs assumes that SPNEGO's AuthenticationException is always fatal. The exception is thrown if authentication truly fails due to bad credentials, but it's also thrown when the auth ...
, 2016-11-28, 16:43
[HDFS-4389] Non-HA DFSClients do not attempt reconnects
...The HA retry policy implementation appears to have broken non-HA DFSClient connect retries. The ipc Client.Connection#handleConnectionFailure used to perform 45 connection attempts, bu...
, 2016-11-28, 16:42
[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....
, 2016-11-28, 16:41
[HDFS-10673] Optimize FSPermissionChecker's internal path usage
...The INodeAttributeProvider and AccessControlEnforcer features degrade performance and generate excessive garbage even when neither is used. Main issues: A byte of components is unn...
, 2016-11-18, 01:21
[HDFS-10656] Optimize conversion of byte arrays back to path string
...DFSUtil.byteArray2PathString generates excessive object allocation. each byte array is encoded to a string (copy) string appended to a builder which extracts the chars from the intermediate ...
, 2016-11-15, 16:17
[HDFS-7964] Add support for async edit logging
...Edit logging is a major source of contention within the NN. LogEdit is called within the namespace write log, while logSync is called outside of the lock to allow greater concurrency. ...
, 2016-11-02, 10:31
[HADOOP-12483] Maintain wrapped SASL ordering for postponed IPC responses
...A SASL encryption algorithm (wrapping) may have a required ordering for encrypted responses. The IPC layer encrypts when the response is set based on the assumption it is being immedia...
, 2016-11-02, 05:59
[HADOOP-10300] Allowed deferred sending of call responses
...RPC handlers currently do not return until the RPC call completes and response is sent, or a partially sent response has been queued for the responder. It would be useful for a proxy m...
, 2016-11-02, 05:25
[HDFS-10997] Reduce number of path resolving methods
...FSDirectory contains many methods for resolving paths to an IIP and/or inode. These should be unified into a couple methods that will consistently do the basics of resolving reserved p...
, 2016-11-01, 14:35
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