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https://issues.apache.org/jira/browse/CASSANDRA-13821?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Ramiro Rioboo updated CASSANDRA-13821:
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Attachment: (was: operational logs.part01.rar)
> A lot of ReadTimeoutException errors
> ------------------------------------
>
> Key: CASSANDRA-13821
> URL: https://issues.apache.org/jira/browse/CASSANDRA-13821
> Project: Cassandra
> Issue Type: Bug
> Components: Core, CQL
> Environment: We have a Cassandra Cluster with 2 Datacenters:
> Cassandra Version: 2.2.5
> *+DC1 - OperationalDC:+*
> 3 nodes Virtual Server on VMWare.
> S.O.: Windows 2012 Server 64bits-native
> vCPU 12 Cores @ 2.5Ghz
> RAM: 16GB
> HDD: 3,6 TB Virtual Drive
> *+DC2 - AnalyticalDC:+*
> 3 nodes Virtual Server on VMWare.
> S.O.: Running on Windows 2012 Server 64bits-native
> vCPU 12 Cores @ 2.5Ghz
> RAM: 16GB
> HDD: 3,6 TB Virtual Drive
> Reporter: Ramiro Rioboo
> Labels: performance, windows
> Fix For: 2.2.5
>
> Original Estimate: 168h
> Remaining Estimate: 168h
>
> Our application connects directly to OperationalDC via CQL.
> During the daily operation we have a large number of WriteTimeoutException
> and ReadTimeoutException errors.
> In the logs of Cassandra we can see that the read and write timeout errors
> are also recorded with the error:
> _Java.lang.RuntimeException: java.lang.RuntimeException:
> org.apache.cassandra.exceptions.ReadTimeoutException: Operation timed out -
> received only 1 responses._
> *+Log Detail, Application Level:+*
> _22:54:22,945 [ERROR] AbstractEntityManager - Insert object
> 'Event{...}' error com.datastax.driver.core.exceptions.WriteTimeoutException:
> Cassandra timeout during write query at consistency LOCAL_QUORUM (2 replica
> were required but only 1 acknowledged the write)_
> *+Log Detail, Cassandra Level:+*
> _EBUG [SharedPool-Worker-6] 2017-08-24 08:36:40,114 StorageProxy.java:1893 -
> Range slice failure; received 0 of 1 responses for range 1 of 1
> java.lang.RuntimeException: java.lang.RuntimeException:
> org.apache.cassandra.exceptions.ReadTimeoutException: Operation timed out -
> received only 1 responses._
> The timeout error occurs 2 seconds later because of the configuration in the
> yaml:+underlined text+
> _# How long the coordinator should wait for writes to complete
> write_request_timeout_in_ms: 2000_
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