https://community.cloudera.com/t5/Support-Questions/HBase-regionserver-reporting-wal-FSHLog-Slow-sync-cost/m-p/95601#M58960 <P>All RS return this message. I followed all tuning practices as described on SME list. </P> Sat, 17 Oct 2015 23:11:36 GMT aervits 2015-10-17T23:11:36Z https://community.cloudera.com/t5/Support-Questions/HBase-regionserver-reporting-wal-FSHLog-Slow-sync-cost/m-p/95599#M58958 Sat, 17 Oct 2015 10:27:02 GMT https://community.cloudera.com/t5/Support-Questions/HBase-regionserver-reporting-wal-FSHLog-Slow-sync-cost/m-p/95599#M58958 aervits 2015-10-17T10:27:02Z https://community.cloudera.com/t5/Support-Questions/HBase-regionserver-reporting-wal-FSHLog-Slow-sync-cost/m-p/95600#M58959 <P>Is this for all RSs or just one "abnormal" one. Are you sure there are no bad disks, or all standard OS tunings have been done.</P><P>this jira ticket was meant to help investigate these issues</P><P><A href="https://issues.apache.org/jira/browse/HBASE-11240">https://issues.apache.org/jira/browse/HBASE-11240</A></P> Sat, 17 Oct 2015 14:37:28 GMT https://community.cloudera.com/t5/Support-Questions/HBase-regionserver-reporting-wal-FSHLog-Slow-sync-cost/m-p/95600#M58959 nmaillard1 2015-10-17T14:37:28Z https://community.cloudera.com/t5/Support-Questions/HBase-regionserver-reporting-wal-FSHLog-Slow-sync-cost/m-p/95601#M58960 <P>All RS return this message. I followed all tuning practices as described on SME list. </P> Sat, 17 Oct 2015 23:11:36 GMT https://community.cloudera.com/t5/Support-Questions/HBase-regionserver-reporting-wal-FSHLog-Slow-sync-cost/m-p/95601#M58960 aervits 2015-10-17T23:11:36Z