[AMBARI-6061] OutOfMemoryError during host checks on 2k nodes cluster

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.6.1
• Fix Version/s: 1.7.0
• Component/s: ambari-server
• Assignee: Dmitry Lysnichenko
• Reporter: Siddharth Wagle
• Created: 09/Jun/14 21:33
• Updated: 26/Aug/14 14:59
• Resolved: 26/Aug/14 14:27

Description

Host checks are executed as custom actions. But each task contains list of all hosts in roleParams field of execution command.
On 2k node cluster this results in 170kB overhead for each task and 170kB more after deserialization, which seem to be enough to cause OutOfMemory error.
Workaround is to increase max heap size to 4096m.

For tasks generated by server similar trouble was resolved by moving clusterHostInfo to Stage level.

Issue Links

• links to: review board