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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (FLINK-4123) CassandraWriteAheadSink can hang on cassandra failure
Date Fri, 01 Jul 2016 11:15:11 GMT

    [ https://issues.apache.org/jira/browse/FLINK-4123?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15358805#comment-15358805

ASF GitHub Bot commented on FLINK-4123:

Github user zentol commented on the issue:

    @tillrohrmann Addressed your comments.

> CassandraWriteAheadSink can hang on cassandra failure
> -----------------------------------------------------
>                 Key: FLINK-4123
>                 URL: https://issues.apache.org/jira/browse/FLINK-4123
>             Project: Flink
>          Issue Type: Bug
>          Components: Cassandra Connector
>    Affects Versions: 1.1.0
>            Reporter: Chesnay Schepler
>            Assignee: Chesnay Schepler
>            Priority: Blocker
>             Fix For: 1.1.0
> The CassandraWriteAheadSink verifies that all writes send to cassandra have been applied
by counting how many were sent and how many callbacks were activated. Once all writes were
sent the sink enters into a loop that is only exited once both counts are equal.
> Thus, should cassandra crash after all writes were sent, without having acknowledged
all writes, the sink will deadlock in the loop.

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