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Jeff Jirsa commented on CASSANDRA-13821: ---------------------------------------- Is there any reason you believe this to be a Cassandra bug rather than environmental / tuning / network? > 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 > > Attachments: CCGWEAPP03_cassandra.yaml, CCGWEAPP04_cassandra.yaml, > CCGWEAPP05_cassandra.yaml, operational logs.part01.rar, operational > logs.part02.rar, operational logs.part03.rar > > 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_ -- This message was sent by Atlassian JIRA (v6.4.14#64029) --------------------------------------------------------------------- To unsubscribe, e-mail: commits-unsubscr...@cassandra.apache.org For additional commands, e-mail: commits-h...@cassandra.apache.org