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Posted to commits@cassandra.apache.org by "wei song (Jira)" <ji...@apache.org> on 2022/06/06 02:27:00 UTC
[jira] [Created] (CASSANDRA-17682) index read is from one node while authenticator is open
wei song created CASSANDRA-17682:
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Summary: index read is from one node while authenticator is open
Key: CASSANDRA-17682
URL: https://issues.apache.org/jira/browse/CASSANDRA-17682
Project: Cassandra
Issue Type: Bug
Reporter: wei song
I have a cluster which replication_factor is 3 like:
{code:java}
Datacenter: DC1
================
Status=Up/Down
|/ State=Normal/Leaving/Joining/Moving
-- Address Load Tokens Owns Host ID Rack
UN 192.168.242.129 271.1 MiB 256 ? bda86425-b6cd-479d-a410-c9bd8826d505 rack1
UN 192.168.242.134 256.13 MiB 256 ? a1935992-3443-4f02-9496-23def15d950d rack1
UN 192.168.242.135 270.81 MiB 256 ? 8031e6fd-6d60-4fb2-8323-14f93f4c1468 rack1
{code}
While authenticator is open，all read disk IO for index reads comes from a node。Read disk IO of other node is 0. it is just like that all index read is from one node.
By the way, index read connot get from nodetool tablestats of cassandra3.11.x
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