apache-zookeeper

How to recover from the following error that started happening after a server crash? Zookeeper won’t start and the following message is showing repeatedly on the log. 2017-05-27 01:02:08,072 [myid:] - INFO [main:Environment@100] - Server environment:java.library.path=/usr/java/packages/lib/amd64:/usr/lib64:/lib64:/lib:/usr/lib 2017-05-27 01:02:08,072 [myid:] - INFO [main:Environment@100] - Server environment:java.io.tmpdir=/tmp 2017-05-27 01:02:08,072 [myid:] - INFO [main:Environment@100] - Server environment:java.compiler=<NA> 2017-05-27 01:02:08,072 [myid:] - INFO [main:Environment@100] -

I have setup a SolrCloud replication using standalone zookeeper. But now I wish to make some changes to my Schema.xml and reload the core. The problem is that when I run a single server Solr (no solrcloud) the new schema is loaded, but I do not know how to reload schema on all the replication server. I tried reloading the schema on one of the server with no desired impact. Is there a way in which I can reload my schema.xml in Solr in distributed replication setup which uses zookeeper. Global Warrior Just found the solution we need to push the changed configuration to zookeeper ensemble. Just

I have installed zookeeper in 3 different aws servers. The following is the configuration in all the servers tickTime=2000 initLimit=10 syncLimit=5 dataDir=/var/zookeeper clientPort=2181 server.1=x.x.x.x:2888:3888 server.2=x.x.x.x:2888:3888 server.3=x.x.x.x:2888:3888 All the three instance have a myid file at var/zookeeper with appropriate id in it. All the three servers have all ports open from the aws console. But when I run the zookeeper server, I get the following error in all the instances. 2015-06-19 12:09:22,989 [myid:1] - WARN [QuorumPeer[myid=1]/0:0:0:0:0:0:0:0:2181:QuorumCnxManager

I'm using Kafka's high-level consumer. Because I'm using Kafka as a 'queue of transactions' for my application, I need to make absolutely sure I don't miss or re-read any messages. I have 2 questions regarding this: How do I commit the offset to zookeeper? I will turn off auto-commit and commit offset after every message successfully consumed. I can't seem to find actual code examples of how to do this using high-level consumer. Can anyone help me with this? On the other hand, I've heard committing to zookeeper might be slow, so another way may be to locally keep track of the offsets? Is this

From the ZooKeeper FAQ : Reliability: A single ZooKeeper server (standalone) is essentially a coordinator with no reliability (a single serving node failure brings down the ZK service). A 3 server ensemble (you need to jump to 3 and not 2 because ZK works based on simple majority voting) allows for a single server to fail and the service will still be available. So if you want reliability go with at least 3. We typically recommend having 5 servers in "online" production serving environments. This allows you to take 1 server out of service (say planned maintenance) and still be able to sustain

I am using zookeeper to get data from kafka. And here I always get data from last offset point. Is there any way to specify the time of offset to get old data? There is one option autooffset.reset. It accepts smallest or largest. Can someone please explain what is smallest and largest. Can autooffset.reset helps in getting data from old offset point instead of latest offset point? The consumers belong always to a group and, for each partition, the Zookeeper keeps track of the progress of that consumer group in the partition. To fetch from the beginning, you can delete all the data associated