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https://issues.apache.org/jira/browse/PHOENIX-56?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13906066#comment-13906066
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stack commented on PHOENIX-56:
------------------------------
[~russell.jurney] Thanks for thread dump. Its just the single thread as you
report stuck waiting on response from master (I thought there would be
something more interesting in the thread dump). In code it says this around
where it is stuck:
{code}
// Cannot connect to master or it is not running. Sleep & retry
{code}
Master is for sure running? You can do an hbase shell and it connects fine
from the machine when it is hung up in sqlline?
There used to be an old issue where zk had upper bound on number of outstanding
connections from one client to quell dos-like disruptions but IIRC that upper
bound was ~30 connections and was fixed in hbase client at least.
> Phoenix/JDBC becomes unresponsive
> ---------------------------------
>
> Key: PHOENIX-56
> URL: https://issues.apache.org/jira/browse/PHOENIX-56
> Project: Phoenix
> Issue Type: Bug
> Affects Versions: 2.2.3
> Environment: HBase 0.94.6
> Reporter: Russell Jurney
> Attachments: hbase-site.xml, hbase.dump, sqlline.jstack
>
>
> After some hours or days, our Phoenix JDBC connection becomes unresponsive.
> It can't be reached unless we remove all tables, including SYSTEM.TABLE and
> restart HBase.
> There are no errors that accompany this problem, so we don't know how to
> debug it. Is anyone else seeing this behavior?
> Using a different client version of the JAR does result in an error saying
> version mismatch... so at some level we think the service is running. It just
> can't complete a connection. sqlline.sh freezes when we connect.
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