[KYLIN-4333] Build Server OOM

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: v3.0.0, v3.0.0-beta, v3.0.0-alpha2
• Fix Version/s: v3.1.0, v3.0.1
• Component/s: Job Engine, Query Engine
• Assignee: wangxiaojing
• Reporter: wangxiaojing
• Created: 10/Jan/20 10:10
• Updated: 31/Jul/20 12:22
• Resolved: 15/Jan/20 06:27

Description

Kylin 3 frequently appears full GC or even OOM, and build server appears OOM almost every 4 days. Query server also has full GC, but it appears less frequently than build server.

We have about 2000 cubes on this Kylin cluster (3 build servers and 3 query servers , 32g memory per server)。

Through mat analysis of dump, there may be a memory leak.

Issue Links

• links to: GitHub Pull Request #1050