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[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...
, 2017-04-27, 14:05
[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...
, 2017-03-31, 05:48
[HDFS-11379] DFSInputStream may infinite loop requesting block locations
...DFSInputStream creation caches file size and initial range of locations. If the file is truncated (or replaced) and the client attempts to read outside the initial range, the client go...
, 2017-02-17, 23:41
[HDFS-8776] Decom manager should not be active on standby
...The decommission manager should not be actively processing on the standby.The decomm manager goes through the costly computation for determining every block on the node requires replication ...
, 2017-01-06, 22:05
[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 ...
, 2017-01-06, 08:06
[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-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
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