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Re: Latency when the snapshot is taking - Zookeeper - [mail # user]
...Hi,SPM will show you ZK latency - http://sematext.com/spm . So snapshot and watch the charts, set alerts or enable anomaly detection on latency.Otis  ...
   Author: Otis Gospodnetic, 2014-11-21, 23:14
Re: Migrating Zookeeper cluster (3.4.6) to different machines - Zookeeper - [mail # user]
...Hi,Would it not be possible to just add new nodes one by one and remove oldones one by one to keep the cluster healthy during the transition?Thanks,OtisMonitoring * Alerting * Anomaly Detect...
   Author: Otis Gospodnetic, 2014-11-12, 22:55
[expand - 1 more] - Re: Programmatic ZooKeeper version detection/extraction? - Zookeeper - [mail # user]
...Thanks Jürgen!We'll make use of that in SPM , thanks.I see Ani (hi!) replied with info about 4 char commands, which we couldalso use, but if you think about apps that already connect to ZK J...
   Author: Otis Gospodnetic, 2014-11-12, 22:49
[expand - 1 more] - Re: 3.5.0 release GA schedule? - Zookeeper - [mail # user]
...Hi Patrick,Missed that thread, thanks!Do you know if it's got some backwards incompatible changes that would make3.5.0 incompatible? (with, say, Kafka 0.8.x)  I checked all emails in th...
   Author: Otis Gospodnetic, 2014-11-03, 21:51
Dynamic ZK cluster membership without ZOOKEEPER-107 - Zookeeper - [mail # user]
...Hello,In absence of https://issues.apache.org/jira/browse/ZOOKEEPER-107 how dopeople handle situations where ZK cluster membership needs to be a littlebit.... dynamic, let's say.Here's the u...
   Author: Otis Gospodnetic, 2014-11-03, 21:39
[expand - 2 more] - Re: Missing MBeans in JMX - Zookeeper - [mail # user]
...Hi,In the ZK node where I don't see the normal ZK MBeans I see this:org.apache.ZooKeeperService:name0=ReplicatedServer_id1,name1=replica.1,name2=*LeaderElection*In another ZK node where I DO...
   Author: Otis Gospodnetic, 2014-10-22, 17:35
Q about majority voting, # of nodes, even node number - Zookeeper - [mail # user]
...Hi,  Somebody asked me recently and I "got stuck" trying to explain this. When people ask how many ZK nodes they should have a common answer is "odd number: 3 or 5 or ...", so ZK can do...
   Author: Otis Gospodnetic, 2014-01-16, 04:59
UsefulTools - Apache ZooKeeper - Apache Software Foundation - Zookeeper - [wiki]
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https://cwiki.apache.org/confluence/display/ZOOKEEPER/UsefulTools    Author: Otis Gospodnetic, 2013-12-06, 00:00
Troubleshooting - Apache ZooKeeper - Apache Software Foundation - Zookeeper - [wiki]
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https://cwiki.apache.org/confluence/display/ZOOKEEPER/Troubleshooting    Author: Otis Gospodnetic, 2013-12-06, 00:00
Announcement: ZooKeeper Performance Monitoring in SPM - Zookeeper - [mail # user]
...Hi,  Quick announcement that we've added ZooKeeper monitoring and alerting to SPM, so you can monitor it in SPM along your other clusters - Hadoop, HBase, Elasticsearch, Solr, Kafka, et...
   Author: Otis Gospodnetic, 2013-11-19, 14:33
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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