Ramiro Rioboo created CASSANDRA-13821:
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Summary: 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
Fix For: 2.2.5
Attachments: CCGWEAPP03_cassandra.yaml, CCGWEAPP04_cassandra.yaml,
CCGWEAPP05_cassandra.yaml, operational logs.part01.rar, operational
logs.part02.rar, operational logs.part03.rar
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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