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https://issues.apache.org/jira/browse/SOLR-8599?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15252692#comment-15252692
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Anshum Gupta edited comment on SOLR-8599 at 4/21/16 8:48 PM:
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I see this in the CHANGE log for 6.0 but there's no Fix version. I guess this
was just a mistake. Please correct me if I'm missing something here.
I'm also back porting this for 5.5.1.
was (Author: anshumg):
I see this in the CHANGE log for 6.0 but there's no Fix version. I guess this
was just a mistake. Please correct me if I'm missing something here.
> Errors in construction of SolrZooKeeper cause Solr to go into an inconsistent
> state
> -----------------------------------------------------------------------------------
>
> Key: SOLR-8599
> URL: https://issues.apache.org/jira/browse/SOLR-8599
> Project: Solr
> Issue Type: Bug
> Components: SolrCloud
> Reporter: Keith Laban
> Assignee: Dennis Gove
> Fix For: master, 6.0, 5.5.1
>
> Attachments: SOLR-8599.patch, SOLR-8599.patch, SOLR-8599.patch,
> SOLR-8599.patch
>
>
> We originally saw this happen due to a DNS exception (see stack trace below).
> Although any exception thrown in the constructor of SolrZooKeeper or the
> parent class, ZooKeeper, will cause DefaultConnectionStrategy to fail to
> update the zookeeper client. Once it gets into this state, it will not try to
> connect again until the process is restarted. The node itself will also
> respond successfully to query requests, but not to update requests.
> Two things should be address here:
> 1) Fix the error handling and issue some number of retries
> 2) If we are stuck in a state like this stop responding to all requests
> {code}
> 2016-01-23 13:49:20.222 ERROR ConnectionManager [main-EventThread] -
> :java.net.UnknownHostException: HOSTNAME: unknown error
> at java.net.Inet6AddressImpl.lookupAllHostAddr(Native Method)
> at java.net.InetAddress$2.lookupAllHostAddr(InetAddress.java:928)
> at java.net.InetAddress.getAddressesFromNameService(InetAddress.java:1323)
> at java.net.InetAddress.getAllByName0(InetAddress.java:1276)
> at java.net.InetAddress.getAllByName(InetAddress.java:1192)
> at java.net.InetAddress.getAllByName(InetAddress.java:1126)
> at
> org.apache.zookeeper.client.StaticHostProvider.<init>(StaticHostProvider.java:61)
> at org.apache.zookeeper.ZooKeeper.<init>(ZooKeeper.java:445)
> at org.apache.zookeeper.ZooKeeper.<init>(ZooKeeper.java:380)
> at org.apache.solr.common.cloud.SolrZooKeeper.<init>(SolrZooKeeper.java:41)
> at
> org.apache.solr.common.cloud.DefaultConnectionStrategy.reconnect(DefaultConnectionStrategy.java:53)
> at
> org.apache.solr.common.cloud.ConnectionManager.process(ConnectionManager.java:132)
> at
> org.apache.zookeeper.ClientCnxn$EventThread.processEvent(ClientCnxn.java:522)
> at org.apache.zookeeper.ClientCnxn$EventThread.run(ClientCnxn.java:498)
> 2016-01-23 13:49:20.222 INFO ConnectionManager [main-EventThread] -
> Connected:false
> 2016-01-23 13:49:20.222 INFO ClientCnxn [main-EventThread] - EventThread shut
> down
> {code}
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