[KAFKA-479] ZK EPoll taking 100% CPU usage with Kafka Client

• Type: Bug
• Status: Resolved
• Priority: Blocker
• Resolution: Invalid
• Environment: java 1.6.0_21; Kafka 0.7.14
• Assignee: Unassigned
• Reporter: Chris Riccomini
• Created: 21/Aug/12 23:41
• Updated: 07/Feb/15 21:52
• Resolved: 07/Feb/15 21:52

Description

Hey Guys,

I'm seeing a very strange bug after I upgraded to Kafka 0.7.14. On my consumer side, the process seems to run with very high CPU usage. I turned on HPROF, and it's showing that 75% of the CPU usage is going to Java's NIO EPoll/select calls.

There are supposedly work arounds that Mina and a few others employ. This seems like more of a ZK bug- have you guys seen this before?

Any ideas?