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https://issues.apache.org/jira/browse/CASSANDRA-14129?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Joshua McKenzie updated CASSANDRA-14129:
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Component/s: Coordination
> BatchStatement (LOGGED BATCH) fails: Not enough replica available for query
> at consistency ONE (1 required but only 0 alive)
> ----------------------------------------------------------------------------------------------------------------------------
>
> Key: CASSANDRA-14129
> URL: https://issues.apache.org/jira/browse/CASSANDRA-14129
> Project: Cassandra
> Issue Type: Bug
> Components: Coordination
> Reporter: Erik Scheuter
> Priority: Major
>
> In our test-cluster I get the error "Not enough replica available for query
> at consistency ONE (1 required but only 0 alive)" when 1 node is down and a
> BatchStatement is used. By default it uses LOGGED BATCHES and
> DCAwareRoundRobinPolicy.
> We have 2 DC's, 4 nodes and a RF 2:2. Write Consistency of QUORUM (*not*
> LOCAL QUORUM).
> I noticed as soon as the driver marked the LocalDC containing the one with
> the node down, this error occurs. If the other DC is marked as the LocalDC,
> everything works as expected.
> The issue https://issues.apache.org/jira/browse/CASSANDRA-7870 points to the
> comment from Olivier Michallat at
> [StackOverflow|https://stackoverflow.com/questions/26015282/cassandra-not-enough-replica-available-java-driver-behaviour-different-from-c]:
> _This batch log must be replicated to at least one replica other than the
> coordinator, otherwise that would defeat the above mechanism._
> I think it needs an other replica in the same DC.
> These constraints can lead to downtime, so I expect them to find in the
> documentation (and a more detailed error message).
> Used:
> Cassandra 2.0.17
> Datastax-driver 3.3.0
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