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[HDFS-9287] Block placement completely fails if too many nodes are decommissioning
...The DatanodeManager coordinates with the HeartbeatManager to update HeartbeatManager.Stats to track capacity and load. This is crucial for block placement to consider space and load. ...
, 2017-01-05, 01:24
[HDFS-6763] Initialize file system-wide quota once on transitioning to active
...FSImage#loadEdits calls updateCountForQuota to recalculate & verify quotas for the entire namespace. A standby NN using shared edits calls this method every minute. The stand...
, 2016-12-16, 13:10
[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-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-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
[HDFS-10980] Optimize check for existence of parent directory
...FSDirectory.verifyParentDir() uses a Path object to parse and return the parent path. This is very expensive compared to using the path within the IIP....
, 2016-10-07, 22:54
[HDFS-10979] Pass IIP for FSDirDeleteOp methods
...Remove path strings from method signatures and/or replace with IIP....
, 2016-10-07, 20:26
[HDFS-10939] Reduce performance penalty of encryption zones
...The encryption zone APIs should be optimized to extensively use IIPs to eliminate path resolutions. The performance penalties incurred by common operations like creation of file status...
, 2016-10-07, 17:37
[HDFS-10955] Pass IIP for FSDirAttr methods
...Methods should always use the resolved IIP instead of re-solving the path....
, 2016-10-06, 22:00
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