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https://issues.apache.org/jira/browse/SPARK-10995?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Hyukjin Kwon resolved SPARK-10995.
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Resolution: Incomplete
> 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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