[ https://issues.apache.org/jira/browse/DRILL-4857?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Suresh Ollala updated DRILL-4857: --------------------------------- Reviewer: Dechang Gu > 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)