Problems: The maximum number of migratior threads created was static set to "40". And the number of these threads get created in rebalance depends on the number of cores user has. If the number of cores exceeds 40, a crash or memory corruption can be seen. Fix: Make the migratior thread pool dynamic. Change-Id: Ifbdac8a1a396363dd75e2f6bcb454070cfdbf839 BUG: 1359711 Signed-off-by: Susant Palai <spalai@redhat.com> Reviewed-on: http://review.gluster.org/15000 Smoke: Gluster Build System <jenkins@build.gluster.org> NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org> CentOS-regression: Gluster Build System <jenkins@build.gluster.org> Reviewed-by: Raghavendra G <rgowdapp@redhat.com>