[
https://issues.apache.org/jira/browse/CASSANDRA-10423?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Roger Schildmeijer updated CASSANDRA-10423:
-------------------------------------------
Description:
While moving a node (nodetool move <newtoken>) we noticed that lwt started
failing for some (~50%) requests. The java-driver (version 2.0.11) returned
com.datastax.driver.core.exceptions.WriteTimeoutException: Cassandra timeout
during write query at consistency SERIAL (7 replica were required but only 0
acknowledged the write). The cluster was not under heavy load.
I noticed that the failed lwt requests all took just above 1s. That information
and the WriteTimeoutException could indicate that this happens:
https://github.com/apache/cassandra/blob/cassandra-2.0.14/src/java/org/apache/cassandra/service/StorageProxy.java#L268
I can't explain why though. Why would there be more cas contention just because
a node is moving?
was:While moving a node (nodetool move <newtoken>) we noticed that lwt
started failing for some (~50%) requests. The java-driver (version 2.0.11)
returned com.datastax.driver.core.exceptions.WriteTimeoutException: Cassandra
timeout during write query at consistency SERIAL (7 replica were required but
only 0 acknowledged the write). The cluster was not under heavy load.
> Paxos/LWT failures when moving node
> -----------------------------------
>
> Key: CASSANDRA-10423
> URL: https://issues.apache.org/jira/browse/CASSANDRA-10423
> Project: Cassandra
> Issue Type: Bug
> Components: Core
> Environment: Cassandra version: 2.0.14
> Java-driver version: 2.0.11
> Reporter: Roger Schildmeijer
>
> While moving a node (nodetool move <newtoken>) we noticed that lwt started
> failing for some (~50%) requests. The java-driver (version 2.0.11) returned
> com.datastax.driver.core.exceptions.WriteTimeoutException: Cassandra timeout
> during write query at consistency SERIAL (7 replica were required but only 0
> acknowledged the write). The cluster was not under heavy load.
> I noticed that the failed lwt requests all took just above 1s. That
> information and the WriteTimeoutException could indicate that this happens:
> https://github.com/apache/cassandra/blob/cassandra-2.0.14/src/java/org/apache/cassandra/service/StorageProxy.java#L268
> I can't explain why though. Why would there be more cas contention just
> because a node is moving?
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
