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Colin Patrick McCabe
Tsz Wo Nicholas Sze
Aaron T. Myers
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[HDFS-3443] Fix NPE when namenode transition to active during startup by adding checkNNStartup() in NameNodeRpcServer
...Start NNLet NN standby services be started.Before the editLogTailer is initialised start ZKFC and allow the activeservices start to proceed further.Here editLogTailer.catchupDuringFailover()...
, 2015-08-05, 00:50
[HDFS-3716] Purger should remove stale fsimage ckpt files
...NN got killed while checkpointing in progress before renaming the ckpt file to actual file.Since the checkpointing process is not completed, on next NN startup it will load previous fsimage ...
, 2015-06-03, 15:25
[HDFS-3512] Delay in scanning blocks at DN side when there are huge number of blocks
...Block scanner maintains the full list of blocks at DN side in a map and there is no differentiation between the blocks which are already scanned and the ones not scanend. For every check (ie...
, 2015-05-11, 13:06
[HDFS-3541] Deadlock between recovery, xceiver and packet responder
...Block Recovery initiated while write in progress at Datanode side. Found a lock between recovery, xceiver and packet responder....
, 2014-09-04, 01:59
[HDFS-3736] Failure in starting NN due to fsimage loading failure
...Came across a situation as follows in our test environment.NNs running in HA mode.While uploading checkpoint, MD5 file renaming from tmp to actual file failed due to some reason which is unk...
, 2013-09-05, 09:22
[HDFS-3161] 20 Append: Excluded DN replica from recovery should be removed from DN.
...1) DN1->DN2->DN3 are in pipeline.2) Client killed abruptly3) one DN has restarted , say DN34) In DN3 info.wasRecoveredOnStartup() will be true5) NN recovery triggered, DN3 skipped from...
, 2013-05-14, 06:12
[HDFS-3477] FormatZK and ZKFC startup can fail due to zkclient connection establishment delay
...Format and ZKFC startup flows continue further after creation of zkclient connection without waiting to check whether the connection is completely established. This leads to failure at...
, 2012-12-06, 07:12
[HDFS-4022] Replication not happening for appended block
...Block written and finalizedLater append called. Block GenTS got changed.DN side log "Can't send invalid block BP-407900822-192.xx.xx.xx-1348830837061:blk_-9185630731157263852_108738" logged ...
, 2012-10-21, 15:03
[HDFS-3162] BlockMap's corruptNodes count and CorruptReplicas map count is not matching.
...Even after invalidating the block, continuosly below log is comingInconsistent number of corrupt replicas for blk_1332906029734_1719blockMap has 0 but corrupt replicas map has 1...
, 2012-10-17, 23:22
[HDFS-3441] Race condition between rolling logs at active NN and purging at standby
...Standby NN has got the ledgerlist with list of all files, including the inprogress file (with say inprogress_val1)Active NN has done finalization and created new inprogress file.Standby when...
, 2012-09-07, 22:09
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