Don't ship w/ icms enabled by default -------------------------------------
Key: HBASE-4714 URL: https://issues.apache.org/jira/browse/HBASE-4714 Project: HBase Issue Type: Task Reporter: stack "Incremental CMS (iCMS) was written for a specific use case - 1 or 2 hardware threads where concurrent activity by CMS would look like a STW (if only 1 hardware thread) or a high tax on the cpu cycles (2 hardware threads). It has a higher overhead and also is less efficient in terms of identifying garbage. The latter is because iCMS spreads out the concurrent work so that objects that it has identified as live earlier may actually be dead when the dead objects are swept up. It's worth testing with regular CMS instead of iCMS." >From recent hotspot mailing list message. Rare is the case where we run on systems of 1 or 2 hardware threads (other than fellows laptops and there the above likely doesn't matter). -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators: https://issues.apache.org/jira/secure/ContactAdministrators!default.jspa For more information on JIRA, see: http://www.atlassian.com/software/jira