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[HDFS-2743] Streamline usage of bookkeeper journal manager - HDFS - [issue]
...The current method of installing bkjournal manager involves generating a tarball, and extracting it with special flags over the hdfs distribution. This is cumbersome and prone to being broke...
http://issues.apache.org/jira/browse/HDFS-2743    Author: Ivan Kelly, 2015-03-16, 20:49
[HDFS-4266] BKJM: Separate write and ack quorum - HDFS - [issue]
...BOOKKEEPER-208 allows the ack and write quorums to be different sizes to allow writes to be unaffected by any bookie failure. BKJM should be able to take advantage of this....
http://issues.apache.org/jira/browse/HDFS-4266    Author: Ivan Kelly, 2015-02-18, 15:30
[HDFS-4154] BKJM: Two namenodes usng bkjm can race to create the version znode - HDFS - [issue]
...nd one will get the following error.2012-11-06 10:04:00,200 INFO hidden.bkjournal.org.apache.zookeeper.ClientCnxn: Session establishment complete on server 109-231-69-172.flexiscale.com/109....
http://issues.apache.org/jira/browse/HDFS-4154    Author: Ivan Kelly, 2015-02-18, 04:14
[HDFS-4265] BKJM doesn't take advantage of speculative reads - HDFS - [issue]
...BookKeeperEditLogInputStream reads entry at a time, so it doesn't take advantage of the speculative read mechanism introduced by BOOKKEEPER-336....
http://issues.apache.org/jira/browse/HDFS-4265    Author: Ivan Kelly, 2015-02-14, 15:22
Configuration service for zookeeper - Zookeeper - [mail # dev]
...Hey folks,I've just had an discussion about how zookeeper is harder to configurethan etcd or consul for example.See: https://coreos.com/docs/cluster-management/setup/cluster-discovery/As I u...
   Author: Ivan Kelly, 2015-02-05, 09:51
[expand - 1 more] - Re: Re: Does zookeeper guarantee read your write in consecutive sessions? - Zookeeper - [mail # user]
...@Flavio, but doesn't a new session have to persist something in thestate? If so, anything before this write will be visible to thesession.On 15 November 2014 11:47, Todd  wrote: ...
   Author: Ivan Kelly, 2014-11-15, 12:08
Re: A suggestion about the design for znode version in ZooKeeper - Zookeeper - [mail # user]
...another option would be to start the znode id at the znode id of theparent znode which will be different between each deletion andcreation of child nodes. One problem with this though (apart...
   Author: Ivan Kelly, 2014-11-15, 09:27
[expand - 1 more] - Re: Migrating Zookeeper cluster (3.4.6) to different machines - Zookeeper - [mail # user]
...I dont think this is possible with 3.4.6 then, at least not withouttaking down the cluster.On 12 November 2014 17:20, Dayo Oliyide  wrote: ...
   Author: Ivan Kelly, 2014-11-12, 20:53
Re: NewConfigNoQuorum? - Zookeeper - [mail # user]
...Isn't this a transient error that occurs while the cluster isreconfiguring? Seems to me that a retry would be correct.-IvanOn 10 November 2014 16:56, Jordan Zimmerman  wrote: ...
   Author: Ivan Kelly, 2014-11-10, 16:54
[expand - 1 more] - Re: Session timeout parameter question - Zookeeper - [mail # user]
...As I understand (from the code), if the 2/3 timeout triggers, thesocket will be cleaned up, so yet, if the server does response in thelast 1/3, the response will be lost. If the client gets ...
   Author: Ivan Kelly, 2014-11-03, 15:54
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NEW: Monitor These Apps!
elasticsearch, apache solr, apache hbase, hadoop, redis, casssandra, amazon cloudwatch, mysql, memcached, apache kafka, apache zookeeper, apache storm, ubuntu, centOS, red hat, debian, puppet labs, java, senseiDB