[jira] [Updated] (SPARK-10995) Graceful shutdown drops processing in Spark Streaming

["Hyukjin Kwon (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/SPARK-10995?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Hyukjin Kwon updated SPARK-10995:
---------------------------------
    Labels: bulk-closed  (was: )

> Graceful shutdown drops processing in Spark Streaming
> -----------------------------------------------------
>
>                 Key: SPARK-10995
>                 URL: https://issues.apache.org/jira/browse/SPARK-10995
>             Project: Spark
>          Issue Type: Bug
>          Components: Spark Core
>    Affects Versions: 1.4.1
>            Reporter: Michal Cizmazia
>            Priority: Major
>              Labels: bulk-closed
>
> After triggering the graceful shutdown on the following application, the application stops before the windowed stream reaches its slide duration. As a result, the data is not completely processed (i.e. saveToMyStorage is not called) before shutdown.
> According to the documentation, graceful shutdown should ensure that the data, which has been received, is completely processed before shutdown.
> https://spark.apache.org/docs/1.4.0/streaming-programming-guide.html#upgrading-application-code
> Spark version: 1.4.1
> Code snippet:
> {code:java}
> Function0<JavaStreamingContext> factory = () -> {
>     JavaStreamingContext context = new JavaStreamingContext(sparkConf, Durations.minutes(1));
>     context.checkpoint("/test");
>     JavaDStream<String> records = context.receiverStream(myReliableReceiver).flatMap(...);
>     records.persist(StorageLevel.MEMORY_AND_DISK());
>     records.foreachRDD(rdd -> { rdd.count(); return null; });
>     records
>         .window(Durations.minutes(15), Durations.minutes(15))
>         .foreachRDD(rdd -> saveToMyStorage(rdd));
>     return context;
> };
> try (JavaStreamingContext context = JavaStreamingContext.getOrCreate("/test", factory)) {
>     context.start();
>     waitForShutdownSignal();
>     Boolean stopSparkContext = true;
>     Boolean stopGracefully = true;
>     context.stop(stopSparkContext, stopGracefully);
> }
> {code}



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