[ https://issues.apache.org/jira/browse/HBASE-6218?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
stack updated HBASE-6218: ------------------------- Attachment: (was: lessthreads.txt) > Add dynamic on/off tracing facility to regionserver; lightweight(?) record of > read/write load > --------------------------------------------------------------------------------------------- > > Key: HBASE-6218 > URL: https://issues.apache.org/jira/browse/HBASE-6218 > Project: HBase > Issue Type: New Feature > Components: test > Reporter: stack > Assignee: stack > > It'd be sweet if we could kick a regionserver and have it start recording the > read/write load. Then after we'd taken a sample, we could turn off the > recording. > Chatting at the meetup today, replaying the WALs would give you the write > side (though missing would be the rate at which the client should play the > edits -- perhaps we could add this to the WALEdit if its not already there?). > Read side we'd need something new recording the read load (Perhaps we'd have > a single trace for read and write but somehow you could get the write from > the WAL logs). It would be nice too if we could verify that we read the > right thing somehow (hash of the return when the trace switch is thrown? > Would need to cater to differences in timestamp possibly?) -- This message was sent by Atlassian JIRA (v6.3.4#6332)