chenbing created CASSANDRA-16123:
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Summary: Use materialized view, CPU usage over 100%
Key: CASSANDRA-16123
URL: https://issues.apache.org/jira/browse/CASSANDRA-16123
Project: Cassandra
Issue Type: Improvement
Components: Consistency/Streaming
Reporter: chenbing
Attachments: image-2020-09-12-16-50-41-341.png,
image-2020-09-12-16-52-46-581.png, image-2020-09-12-16-55-49-813.png,
jstack_25640.txt
env info:
os: CentOS Linux release 7.4.1708
cassandra: apache-cassandra-3.11.8
jdk:1.8.0_261
I used materialized view,but the cpu use over 100 when not cql client request,
My analysis process is as follows:
1. top
find pid is:25640
2. top -pH 25640
!image-2020-09-12-16-52-46-581.png!
3. printf "%x\n" 26065
convert threadid 26065 ,hex value is :65d1
4.jstack -l 26065 > jstack_25640.txt
find 65d1 ind jstask_25640.txt
!image-2020-09-12-16-55-49-813.png!
5.find in code Keyspace.applyInternal
Caused by a loop call Keyspace.applyInternal，
Everybody have any suggessted?
The jstack_25640 on Attachment.
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