[SPARK-5899] Viewing specific stage information which contains thousands of tasks will freak out the driver and CPU cores from where it runs

• Type: Bug
• Status: Resolved
• Priority: Critical
• Resolution: Duplicate
• Affects Version/s: 1.2.1, 1.3.0
• Component/s: Web UI

Environment

CentOS 7, Spark Standalone

• Assignee: Unassigned
• Reporter: Mark Khaitman
• Created: 18/Feb/15 21:42
• Updated: 19/Feb/15 10:35
• Resolved: 19/Feb/15 10:35

Description

If a user ever tries to view specific stage stats, for example, a repartition stage which involves 30000 partitions, the Web UI attempts to load every single task result onto a single webpage, which is completely destroying CPU usage on the driver, which subsequently causes the remaining tasks / jobs to be nearly impossible to complete.

Ideally the task results should be paged (if not too much trouble) to prevent this from happening.

Issue Links

• duplicates: SPARK-4598 Paginate stage page to avoid OOM with > 100,000 tasks