tree 05b5a80abe3b2da326d85a68f6ef025c6fb00f40
parent 544c4ab0e0d9eee09d65267731b70d28d4abcccf
author Michael Blow <mblow@apache.org> 1608329081 -0500
committer Michael Blow <mblow@apache.org> 1608512863 +0000

[NO ISSUE][*DB] Lock manager allocation improvements

1. default lock table size to 1009 for -Xmx < 8GB, otherwise 1048583
2. reduce memory footprint of lock table entries
  a. favor volatile over AtomicLong for ResourceGroup.firstResourceIndex
  b. replace ReentrantReadWriteLock w/ ReentrantLock as RW is not used

Change-Id: I6d2e8b3e2bbd1783171c9372a9570b99a846b72d
Reviewed-on: https://asterix-gerrit.ics.uci.edu/c/asterixdb/+/9363
Integration-Tests: Jenkins <jenkins@fulliautomatix.ics.uci.edu>
Tested-by: Jenkins <jenkins@fulliautomatix.ics.uci.edu>
Reviewed-by: Michael Blow <mblow@apache.org>
Reviewed-by: Luo Chen <cluo8@uci.edu>
Reviewed-by: Till Westmann <tillw@apache.org>