Supporting Apache HBase : Troubleshooting and Supportability Improvements
HBase has been in production in hundreds of clusters across the CDH/HDP customer base and Cloudera/Hortonworks support it for many years.
In this talk, based on our support experience, we aim to introduce useful information to troubleshoot HBase clusters efficiently. First off, we (Daisuke at Cloudera support) are going to talk about typical log messages and web UI info which we can use for troubleshooting (especially for struggling with performance issues). Since their meanings have been changing over the past versions, we would like to show the difference and improvements as well (e.g. HBASE-20232 for memstore flush, HBASE-16972 for slow scanner, HBASE-18469 for request counter, and also HBASE-21207 for sorting in web UI). We (Toshihiro at Cloudera, a former Hortonworks employee) will also cover some new tools (e.g. HBASE-21926 Profiler Servlet, HBASE-11062 htop, etc.), which should also be useful for performance troubleshooting.
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