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Archana Katiyar commented on HBASE-21301: ----------------------------------------- I just went through [HBASE-21154|https://issues.apache.org/jira/browse/HBASE-21154] (Remove hbase:namespace table; fold it into hbase:meta). It looks like the ordering of table creation and the hard dependency on master startup is the concern here. Just thinking out loud - what if we create the required stats table when we start writing the stats from region server, if not already created? In this way, we need not to introduce a new dependency in master startup. We can still call this a system table because user intervention will not be required in creating this. > Heatmap for key access patterns > ------------------------------- > > Key: HBASE-21301 > URL: https://issues.apache.org/jira/browse/HBASE-21301 > Project: HBase > Issue Type: Improvement > Reporter: Archana Katiyar > Assignee: Archana Katiyar > Priority: Major > > Google recently released a beta feature for Cloud Bigtable which presents a > heat map of the keyspace. *Given how hotspotting comes up now and again here, > this is a good idea for giving HBase ops a tool to be proactive about it.* > >>> > Additionally, we are announcing the beta version of Key Visualizer, a > visualization tool for Cloud Bigtable key access patterns. Key Visualizer > helps debug performance issues due to unbalanced access patterns across the > key space, or single rows that are too large or receiving too much read or > write activity. With Key Visualizer, you get a heat map visualization of > access patterns over time, along with the ability to zoom into specific key > or time ranges, or select a specific row to find the full row key ID that's > responsible for a hotspot. Key Visualizer is automatically enabled for Cloud > Bigtable clusters with sufficient data or activity, and does not affect Cloud > Bigtable cluster performance. > <<< > From > [https://cloudplatform.googleblog.com/2018/07/on-gcp-your-database-your-way.html] > (Copied this description from the write-up by [~apurtell], thanks Andrew.) -- This message was sent by Atlassian JIRA (v7.6.3#76005)