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From "Anton Vinogradov (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (IGNITE-3303) Apache Flink Integration - Flink source to run a continuous query against one or multiple caches
Date Wed, 16 Nov 2016 10:10:58 GMT

    [ https://issues.apache.org/jira/browse/IGNITE-3303?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15670037#comment-15670037
] 

Anton Vinogradov commented on IGNITE-3303:
------------------------------------------

Saikat, 

1) As far as I can see 
{noformat}
stopped = true;
{noformat}
at {{org.apache.ignite.source.flink.IgniteSource#stop}} has no impact on
{noformat}
while (!stopped) {
...
{notofmat}
at {{org.apache.ignite.source.flink.IgniteSource#run}}. You can check that {{while}} will
contiue to work.
This happens because these are different {{stopped}} fields, because they are inside different
{{IgniteSource}} instances.

Seems that {{IgniteSource}} added as a source to {{StreamExecutionEnvironment}} is used just
like template, so there is no way to manage it externally (from test).
I think that {{org.apache.ignite.source.flink.IgniteSource#cancel}} is the correct way to
stop {{IgniteSource}}, but it should be triggered from {{StreamExecutionEnvironment}}, somehow.
So, we should get rid of {{org.apache.ignite.source.flink.IgniteSource#stop}} and relocate
it's content to {{org.apache.ignite.source.flink.IgniteSource#cancel}}.

Am I missed something?

2) Anyway, we have to check that we can use more than one {{IgniteSource}} together.
Also, in case {{parallelism}} > 1 can be a good case for production we should test this
case as well.

> Apache Flink Integration - Flink source to run a continuous query against one or multiple
caches
> ------------------------------------------------------------------------------------------------
>
>                 Key: IGNITE-3303
>                 URL: https://issues.apache.org/jira/browse/IGNITE-3303
>             Project: Ignite
>          Issue Type: New Feature
>          Components: streaming
>            Reporter: Saikat Maitra
>            Assignee: Saikat Maitra
>         Attachments: Screen Shot 2016-10-07 at 12.44.47 AM.png, testFlinkIgniteSourceWithLargeBatch.log,
win7.PNG
>
>
> Apache Flink integration 
> +++ *Ignite as a bidirectional Connector* +++
> As a Flink source => run a continuous query against one or multiple
> caches [4].
> Related discussion : http://apache-ignite-developers.2346864.n4.nabble.com/Apache-Flink-lt-gt-Apache-Ignite-integration-td8163.html



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