Aman Sinha created DRILL-4857: --------------------------------- Summary: When no partition pruning occurs with metadata caching there's a performance regression Key: DRILL-4857 URL: https://issues.apache.org/jira/browse/DRILL-4857 Project: Apache Drill Issue Type: Bug Components: Metadata, Query Planning & Optimization Affects Versions: 1.7.0 Reporter: Aman Sinha Assignee: Aman Sinha Fix For: 1.8.0
After DRILL-4530, we see the (expected) performance improvements in planning time with metadata cache for cases where partition pruning got applied. However, in cases where it did not get applied and for sufficiently large number of files (tested with up to 400K files), there's performance regression. Part of this was addressed by DRILL-4846. This JIRA is to track some remaining fixes to address the regression. -- This message was sent by Atlassian JIRA (v6.3.4#6332)