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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
[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
[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
[HDFS-10722] Fix race condition in TestEditLog#testBatchedSyncWithClosedLogs
...The test may fail the following assertion if async edit logs are enabled:logging edit without syncing should do not affect txid expected:<1> but was:<2>. The async thread i...
, 2016-10-31, 23:38
[HDFS-8492] DN should notify NN when client requests a missing block
...If the DN has a block its volume map but not on-disk, it tells clients it's an invalid block id. The NN is not informed of the missing block until either the bp slice scanner or the di...
, 2016-10-27, 12:36
[HDFS-10789] Route webhdfs through the RPC call queue
...Webhdfs is extremely expensive under load and is not subject to the QoS benefits of the RPC call queue. HADOOP-13537 provides the basis for routing webhdfs through the call queue to pr...
, 2016-10-12, 21:48
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