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stack commented on HBASE-5792: ------------------------------ This is great Matteo. We need this. Yeah, agree, this tool will have most value if it puts nothing but a lone region (and WAL). Few minors below: Missing annotatations on audience. Do you need these? IIRC, the default exists w/ need of definition: {code} + public HLogPerformanceEvaluation() { + } {code} You do it in another place at least too. No harm adding a bit of class doc on HLogPutBenchmark You don't want to use a command parser? > HLog Performance Evaluation Tool > -------------------------------- > > Key: HBASE-5792 > URL: https://issues.apache.org/jira/browse/HBASE-5792 > Project: HBase > Issue Type: Test > Components: wal > Reporter: Matteo Bertozzi > Assignee: Matteo Bertozzi > Priority: Minor > Labels: performance, wal > Attachments: HBASE-5792-v0.patch, HBASE-5792-v1.patch > > > Related to HDFS-3280 and the HBase WAL slowdown on 0.23+ > It would be nice to have a simple tool like HFilePerformanceEvaluation, ... > to be able to check easily the HLog performance. -- 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