Mike Giordano created ACCUMULO-1379:
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Summary: PermGen leak
Key: ACCUMULO-1379
URL: https://issues.apache.org/jira/browse/ACCUMULO-1379
Project: Accumulo
Issue Type: Bug
Components: client
Affects Versions: 1.4.3
Environment: Linux/JBoss
Reporter: Mike Giordano
Assignee: Billie Rinaldi
Under version 1.3.7 we are using the following code to initialize a cloudbase
connection during initialization of our web app:
ZooKeeperInstance instance = new
ZooKeeperInstance(instanceName, zooKeepers);
connector = instance.getConnector(userId,
password.getBytes());
The problem is that under the hood, this call creates several threads that are
not cleaned up when the app is undeployed in JBoss. This is occurring without
performing any scans or interacting with cloudbase in any other way. After
relatively few redeploys of the app, the PermGen Space is OOM.
I can't find any reference in the cloudbase API akin to a close() method for
the Connector object. This is a classloader leak effecting any webapp that is
accessing cloudbase directly. The result of this leak is not simply orphaned
threads, but thousands of classes not gc'd because the classloader itself can't
be gc'd. This is what is filling up PermGen.
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