ashutoshcipher commented on code in PR #4248: URL: https://github.com/apache/hadoop/pull/4248#discussion_r957377566
########## hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/lib/MultipleOutputs.java: ########## @@ -527,9 +558,41 @@ public void collect(Object key, Object value) throws IOException { * @throws java.io.IOException thrown if any of the MultipleOutput files * could not be closed properly. */ - public void close() throws IOException { + public void close() throws IOException, InterruptedException { + int nThreads = conf.getInt(MRConfig.MULTIPLE_OUTPUTS_CLOSE_THREAD_COUNT, + MRConfig.DEFAULT_MULTIPLE_OUTPUTS_CLOSE_THREAD_COUNT); + AtomicBoolean encounteredException = new AtomicBoolean(false); + ThreadFactory threadFactory = new ThreadFactoryBuilder().setNameFormat("MultipleOutputs-close") + .setUncaughtExceptionHandler( Review Comment: Thanks. Addressed this in my next commits. ########## hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-jobclient/src/test/java/org/apache/hadoop/mapred/lib/TestMultipleOutputs.java: ########## @@ -70,6 +76,20 @@ public void testWithCounters() throws Exception { _testMOWithJavaSerialization(true); } + @Test(expected=IOException.class) + public void testParallelClose() throws IOException, InterruptedException { Review Comment: Addressed -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: common-issues-unsubscr...@hadoop.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org --------------------------------------------------------------------- To unsubscribe, e-mail: common-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: common-issues-h...@hadoop.apache.org