[CASSANDRA-10837] Cluster/session should be closed in Cassandra Hadoop Input/Output classes

• Type: Bug
• Status: Resolved
• Priority: Normal
• Resolution: Fixed
• Fix Version/s: 3.0.3, 3.2
• Component/s: Legacy/CQL
• Severity: Normal
• Assignee: Alex Liu
• Reporter: Alex Liu

Authors

Alex Liu

Reviewers

Benjamin Lerer

• Created: 10/Dec/15 01:44
• Updated: 16/Apr/19 09:30
• Resolved: 17/Dec/15 13:53

Description

See a lot of following warnings during Hadoop job running

ERROR 11:37:45 LEAK: You are creating too many HashedWheelTimer instances.  HashedWheelTimer is a shared resource that must be reused across the JVM,so that only a few instances are created.

Each cluster/session needs be closed and a shared HashedWheelTimer may reduce the resource leakage.