How to purge the xmit table due to memory leak in org.jgroups.protocols.pbcast.NAKACK2

Solution Unverified - Updated -

Issue

Heap dump shows a memory leak in org.jgroups.protocols.pbcast.NAKACK2
The xmit table initial size is set by xmit_table_msgs_per_row * xmit_table_num_rows
default is 0.5 million
I see there is configuration parameter xmit_table_resize_factor (with default value 1.2) this leads to increase in table size from initial size.

Can we set this factor to 1 (meaning the size will be fixed to 0.5 million), its still ugly but it will impose some limit to size?

Environment

  • Red Hat JBoss Enterprise Application Platform (EAP) 6.0.1
  • Red Hat JBoss Data Grid (JDG) 6.x

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