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[HDFS-14792] [SBN read] StanbyNode does not come out of safemode while adding new blocks. - HDFS - [issue]
...During startup StandbyNode reports that it needs additional X blocks to reach the threshold 1.0000. Where X is changing up and down.This is because with fast tailing SBN adds new blocks from...
http://issues.apache.org/jira/browse/HDFS-14792    Author: Konstantin Shvachko , 2019-10-15, 16:53
[HDFS-14794] [SBN read] reportBadBlock is rejected by Observer. - HDFS - [issue]
...reportBadBlock is rejected by Observer via StandbyExceptionStandbyException: Operation category WRITE is not supported in state observerWe should investigate what are the consequences of thi...
http://issues.apache.org/jira/browse/HDFS-14794    Author: Konstantin Shvachko , 2019-10-15, 16:53
[HDFS-14793] BlockTokenSecretManager should LOG block token range it operates on. - HDFS - [issue]
...At startup log enough information to identified the range of block token keys for the NameNode. This should make it easier to debug issues with block tokens....
http://issues.apache.org/jira/browse/HDFS-14793    Author: Konstantin Shvachko , 2019-10-13, 06:34
[HDFS-14162] Balancer should work with ObserverNode - HDFS - [issue]
...Balancer provides a substantial RPC load on NameNode. It would be good to divert Balancer RPCs getBlocks(), etc. to ObserverNode. The main problem is that Balancer uses NamenodeProtocol, whi...
http://issues.apache.org/jira/browse/HDFS-14162    Author: Konstantin Shvachko , 2019-10-10, 16:23
[HDFS-14494] Move Server logging of StatedId inside receiveRequestState() - HDFS - [issue]
...HDFS-14270 introduced logging of the client and server StateIds in trace level. Unfortunately one of the arguments alignmentContext.getLastSeenStateId() holds a lock on FSEdits, which is cal...
http://issues.apache.org/jira/browse/HDFS-14494    Author: Konstantin Shvachko , 2019-10-03, 23:53
[HDFS-12979] StandbyNode should upload FsImage to ObserverNode after checkpointing. - HDFS - [issue]
...ObserverNode does not create checkpoints. So it's fsimage file can get very old making bootstrap of ObserverNode too long. A StandbyNode should copy latest fsimage to ObserverNode(s) along w...
http://issues.apache.org/jira/browse/HDFS-12979    Author: Konstantin Shvachko , 2019-10-03, 19:25
[HDFS-12978] Fine-grained locking while consuming journal stream. - HDFS - [issue]
...In current implementation SBN consumes the entire segment of transactions under a single namesystem lock, which does not allow reads over a long period of time until the segment is processed...
http://issues.apache.org/jira/browse/HDFS-12978    Author: Konstantin Shvachko , 2019-09-24, 11:00
[HDFS-14703] NameNode Fine-Grained Locking via Metadata Partitioning - HDFS - [issue]
...We target to enable fine-grained locking by splitting the in-memory namespace into multiple partitions each having a separate lock. Intended to improve performance of NameNode write operatio...
http://issues.apache.org/jira/browse/HDFS-14703    Author: Konstantin Shvachko , 2019-09-05, 22:42
[expand - 3 more] - [VOTE] Merge YARN-8200 to branch-2 and branch-3.0 - Hadoop - [mail # dev]
...+1 for the merge.We probably should not bother with branch-3.0 merge since it's been votedEOL.Thanks,--KonstantinOn Thu, Aug 22, 2019 at 4:43 PM Jonathan Hung  wrote:> Hi folks,>&...
   Author: Konstantin Shvachko , 2019-08-27, 18:49
[expand - 3 more] - [VOTE] Mark 2.6, 2.7, 3.0 release lines EOL - Hadoop - [mail # dev]
...+1 for the proposal.I thought we already EOL-ed 2.6 though some time ago.Thanks,--KonstantinOn Tue, Aug 20, 2019 at 8:03 PM Wangda Tan  wrote:> Hi all,>> This is a vote thread ...
   Author: Konstantin Shvachko , 2019-08-27, 18:45