[LithiumBuild3335] ODL Controller crashed after connecting 500 switches without any links

1) Run karaf
2) Enable the below features
feature:install odl-openflowplugin-flow-services
feature:install odl-dlux-all
feature:install odl-l2switch-all
feature:install odl-l2switch-switch-ui
feature:install odl-l2switch-switch-rest

3) Using mininet connect 500 switches without any links
4) Controller crashed with following Exception

opendaylight-user@root>Exception in thread "Thread-49388" java.util.concurrent.RejectedExecutionException: Task org.opendaylight.openflowplugin.openflow.md.core.HandshakeStepWrapper@5719fc8d rejected from org.opendaylight.openflowplugin.openflow.md.core.ThreadPoolLoggingExecutor@5c01b9dc[Shutting down, pool size = 0, active threads = 0, queued tasks = 1, completed tasks = 0]
at java.util.concurrent.ThreadPoolExecutor$AbortPolicy.rejectedExecution(ThreadPoolExecutor.java:2048)
at java.util.concurrent.ThreadPoolExecutor.reject(ThreadPoolExecutor.java:821)
at java.util.concurrent.ThreadPoolExecutor.execute(ThreadPoolExecutor.java:1372)
at org.opendaylight.openflowplugin.openflow.md.core.ConnectionConductorImpl.onConnectionReady(ConnectionConductorImpl.java:450)
at org.opendaylight.openflowjava.protocol.impl.core.connection.ConnectionAdapterImpl$3.run(ConnectionAdapterImpl.java:449)
at java.lang.Thread.run(Thread.java:744)
Exception in thread "odl-stat-rpc-oper-thread-0" java.lang.OutOfMemoryError: Java heap space
at java.util.Arrays.copyOfRange(Arrays.java:2694)
at java.lang.String.<init>(String.java:203)
at java.lang.StringBuilder.toString(StringBuilder.java:405)
at java.lang.Throwable.toString(Throwable.java:481)
at org.apache.log4j.OsgiThrowableRenderer.doRender(OsgiThrowableRenderer.java:97)
at org.apache.log4j.OsgiThrowableRenderer.doRender(OsgiThrowableRenderer.java:118)
at org.apache.log4j.OsgiThrowableRenderer.doRender(OsgiThrowableRenderer.java:118)
at org.apache.log4j.OsgiThrowableRenderer.doRender(OsgiThrowableRenderer.java:118)
at org.apache.log4j.OsgiThrowableRenderer.doRender(OsgiThrowableRenderer.java:118)
at org.apache.log4j.OsgiThrowableRenderer.doRender(OsgiThrowableRenderer.java:118)
at org.apache.log4j.OsgiThrowableRenderer.doRender(OsgiThrowableRenderer.java:118)
at org.apache.log4j.OsgiThrowableRenderer.doRender(OsgiThrowableRenderer.java:118)
at org.apache.log4j.OsgiThrowableRenderer.doRender(OsgiThrowableRenderer.java:118)
at org.apache.log4j.OsgiThrowableRenderer.doRender(OsgiThrowableRenderer.java:118)
at org.apache.log4j.OsgiThrowableRenderer.doRender(OsgiThrowableRenderer.java:118)
at org.apache.log4j.OsgiThrowableRenderer.doRender(OsgiThrowableRenderer.java:118)
at org.apache.log4j.OsgiThrowableRenderer.doRender(OsgiThrowableRenderer.java:118)
at org.apache.log4j.OsgiThrowableRenderer.doRender(OsgiThrowableRenderer.java:118)
at org.apache.log4j.OsgiThrowableRenderer.doRender(OsgiThrowableRenderer.java:118)
at org.apache.log4j.OsgiThrowableRenderer.doRender(OsgiThrowableRenderer.java:118)
at org.apache.log4j.OsgiThrowableRenderer.doRender(OsgiThrowableRenderer.java:118)
at org.apache.log4j.OsgiThrowableRenderer.doRender(OsgiThrowableRenderer.java:118)
at org.apache.log4j.OsgiThrowableRenderer.doRender(OsgiThrowableRenderer.java:118)
at org.apache.log4j.OsgiThrowableRenderer.doRender(OsgiThrowableRenderer.java:118)
at org.apache.log4j.OsgiThrowableRenderer.doRender(OsgiThrowableRenderer.java:118)
at org.apache.log4j.OsgiThrowableRenderer.doRender(OsgiThrowableRenderer.java:118)
at org.apache.log4j.OsgiThrowableRenderer.doRender(OsgiThrowableRenderer.java:118)
at org.apache.log4j.OsgiThrowableRenderer.doRender(OsgiThrowableRenderer.java:118)
at org.apache.log4j.OsgiThrowableRenderer.doRender(OsgiThrowableRenderer.java:118)
at org.apache.log4j.OsgiThrowableRenderer.doRender(OsgiThrowableRenderer.java:118)
at org.apache.log4j.OsgiThrowableRenderer.doRender(OsgiThrowableRenderer.java:118)
at org.apache.log4j.OsgiThrowableRenderer.doRender(OsgiThrowableRenderer.java:118)

5) Operational datastore continue to operate and shows 100 switches even if the switches are disconnected.