RE: Cassandra 2.0.x OOM during bootstrap

2016-04-21 Thread Michael Fong
 in advanced!

Sincerely,

Michael Fong

From: Michael Fong [mailto:michael.f...@ruckuswireless.com]
Sent: Wednesday, April 20, 2016 10:43 AM
To: user@cassandra.apache.org; d...@cassandra.apache.org
Subject: Cassandra 2.0.x OOM during bootstrap

Hi, all,

We have recently encountered a Cassandra OOM issue when Cassandra is brought up 
sometimes (but not always) in our 4-node cluster test bed.

After analyzing the heap dump, we could find the Internal-Response thread pool 
(JMXEnabledThreadPoolExecutor) is filled with thounds of 
'org.apache.cassandra.net.MessageIn' objects, and occupy > 2 gigabytes of heap 
memory.

According to the documents on internet, it seems internal-response thread pool 
is somewhat related to schema-checking. Has anyone encountered similar issue 
before?

We are using Cassandra 2.0.17 and JDK 1.8. Thanks in advance!

Sincerely,

Michael Fong


Cassandra 2.0.x OOM during bootstrap

2016-04-19 Thread Michael Fong
Hi, all,

We have recently encountered a Cassandra OOM issue when Cassandra is brought up 
sometimes (but not always) in our 4-node cluster test bed.

After analyzing the heap dump, we could find the Internal-Response thread pool 
(JMXEnabledThreadPoolExecutor) is filled with thounds of 
'org.apache.cassandra.net.MessageIn' objects, and occupy > 2 gigabytes of heap 
memory.

According to the documents on internet, it seems internal-response thread pool 
is somewhat related to schema-checking. Has anyone encountered similar issue 
before?

We are using Cassandra 2.0.17 and JDK 1.8. Thanks in advance!

Sincerely,

Michael Fong