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[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 , 2019-03-14, 23:26
[HDFS-14347] Restore a comment line mistakenly removed in ProtobufRpcEngine - HDFS - [issue]
...HDFS-12977 mistakenly removed the following comment line in ProtobufRpcEngine.Server.Server()-     * the range of ports used when port is 0 (an ephemeral port)+     * @pa...
http://issues.apache.org/jira/browse/HDFS-14347    Author: Konstantin Shvachko , 2019-03-12, 02:13
[HDFS-12943] Consistent Reads from Standby Node - HDFS - [issue]
...StandbyNode in HDFS is a replica of the active NameNode. The states of the NameNodes are coordinated via the journal. It is natural to consider StandbyNode as a read-only replica. As with an...
http://issues.apache.org/jira/browse/HDFS-12943    Author: Konstantin Shvachko , 2019-03-07, 23:40
[HDFS-12977] Add stateId to RPC headers. - HDFS - [issue]
...stateId is a new field in the RPC headers of NameNode proto calls.stateId is the journal transaction Id, which represents LastSeenId for the clients and LastWrittenId for NameNodes. See more...
http://issues.apache.org/jira/browse/HDFS-12977    Author: Konstantin Shvachko , 2019-03-07, 23:39
[HDFS-13781] Unit tests for standby reads. - HDFS - [issue]
...Create more unit tests supporting standby reads feature. Let's come up with a list of tests that provide sufficient test coverage....
http://issues.apache.org/jira/browse/HDFS-13781    Author: Konstantin Shvachko , 2019-02-25, 22:55
[HDFS-13961] TestObserverNode refactoring - HDFS - [issue]
...TestObserverNode combines unit tests for ObserverNode. The tests are of different types. I propose to split them into separate modules, factor out common methods, and optimize it so that it ...
http://issues.apache.org/jira/browse/HDFS-13961    Author: Konstantin Shvachko , 2019-02-25, 22:55
[HDFS-14130] Make ZKFC ObserverNode aware - HDFS - [issue]
...Need to fix automatic failover with ZKFC. Currently it does not know about ObserverNodes trying to convert them to SBNs....
http://issues.apache.org/jira/browse/HDFS-14130    Author: Konstantin Shvachko , 2019-02-25, 22:51
[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 , 2019-02-14, 20:23
[expand - 3 more] - [VOTE] Moving branch-2 precommit/nightly test builds to java 8 - Hadoop - [mail # dev]
...+1 Makes sense to me.Thanks,--KonstOn Mon, Feb 4, 2019 at 6:14 PM Jonathan Hung  wrote:> Hello,>> Starting a vote based on the discuss thread [1] for moving branch-2> precom...
   Author: Konstantin Shvachko , 2019-02-05, 23:29
[expand - 2 more] - [DISCUSS] Moving branch-2 to java 8 - Hadoop - [mail # dev]
...Just to make sure we are on the same page, as the subject of this thread istoo generic and confusing.*The proposal is to move branch-2 Jenkins builds such as precommit to runtests on openJDK...
   Author: Konstantin Shvachko , 2019-02-02, 01:04