[SPARK-23508] blockManagerIdCache in BlockManagerId may cause oom

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.1.1, 2.2.1
• Fix Version/s: 2.2.2, 2.3.1, 2.4.0
• Component/s: Deploy, Spark Core
• Assignee: zhoukang
• Reporter: zhoukang
• Created: 24/Feb/18 10:55
• Updated: 28/Feb/18 15:17
• Resolved: 28/Feb/18 15:17

Description

blockManagerIdCache in BlockManagerId will not remove old values which may cause oom

val blockManagerIdCache = new ConcurrentHashMap[BlockManagerId, BlockManagerId]()

Since whenever we apply a new BlockManagerId, it will put into this map.

below is an jmap:

Issue Links

• links to: [Github] Pull Request #20667 (caneGuy)