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Jonathan Ellis commented on CASSANDRA-1155: ------------------------------------------- this metadata needs to be persisted (as a Meta file to go with Data Index and Filter), too. > keep persistent row statistics > ------------------------------ > > Key: CASSANDRA-1155 > URL: https://issues.apache.org/jira/browse/CASSANDRA-1155 > Project: Cassandra > Issue Type: Sub-task > Components: Core > Reporter: Jonathan Ellis > Fix For: 0.7 > > > during flush and compaction we should keep row size statistics using > EstimatedHistogram (column count, and row size), replacing min/max/total > sizes in CFS. > having this detail will let us estimate, given an index CF, how many nodes we > need to query to get the number of matching rows requested by the client. -- This message is automatically generated by JIRA. - You can reply to this email to add a comment to the issue online.