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ASF GitHub Bot commented on APEXMALHAR-2134: -------------------------------------------- GitHub user chaithu14 reopened a pull request: https://github.com/apache/apex-malhar/pull/379 APEXMALHAR-2134 Fix the NullPointerException, if the kafka partition has no leader broker You can merge this pull request into a Git repository by running: $ git pull https://github.com/chaithu14/incubator-apex-malhar APEXMALHAR-2134-NP-LB Alternatively you can review and apply these changes as the patch at: https://github.com/apache/apex-malhar/pull/379.patch To close this pull request, make a commit to your master/trunk branch with (at least) the following in the commit message: This closes #379 ---- commit 0da1765f4ff12fcda1461f3af06a57450ba8fb4c Author: chaitanya <chai...@apache.org> Date: 2016-08-25T19:21:43Z APEXMALHAR-2134 Fix the NullPointerException, if the kafka partition has no leader broker ---- > Catch NullPointerException if some Kafka partition has no leader broker > ----------------------------------------------------------------------- > > Key: APEXMALHAR-2134 > URL: https://issues.apache.org/jira/browse/APEXMALHAR-2134 > Project: Apache Apex Malhar > Issue Type: Bug > Reporter: Siyuan Hua > Assignee: Chaitanya > Labels: newbie > Fix For: 3.5.0 > > Original Estimate: 24h > Remaining Estimate: 24h > > Kafka partition could have no leader broker some time and we need to catch > exception and skip that partition for the time until new leader is elected > Here is the exception we see in the stacktrace > 2016-07-05 14:00:46,087 ERROR kafka.SimpleKafkaConsumer > (SimpleKafkaConsumer.java:run(481)) - Exception {} > java.lang.NullPointerException > at java.util.concurrent.ConcurrentHashMap.putVal(ConcurrentHashMap.java:1011) > at java.util.concurrent.ConcurrentHashMap.put(ConcurrentHashMap.java:1006) > at > com.datatorrent.contrib.kafka.SimpleKafkaConsumer$MetaDataMonitorTask.monitorMetadata(SimpleKafkaConsumer.java:511) > at > com.datatorrent.contrib.kafka.SimpleKafkaConsumer$MetaDataMonitorTask.run(SimpleKafkaConsumer.java:477) > at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) > at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) > at > java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) > at > java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) > at > java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) > at > java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) > at java.lang.Thread.run(Thread.java:745) > 2016-07-05 14:01:15,999 ERROR kafka.SimpleKafkaConsumer > (SimpleKafkaConsumer.java:run(481)) - Exception {} > java.lang.NullPointerException > at java.util.concurrent.ConcurrentHashMap.putVal(ConcurrentHashMap.java:1011) > at java.util.concurrent.ConcurrentHashMap.put(ConcurrentHashMap.java:1006) > at > com.datatorrent.contrib.kafka.SimpleKafkaConsumer$MetaDataMonitorTask.monitorMetadata(SimpleKafkaConsumer.java:511) > at > com.datatorrent.contrib.kafka.SimpleKafkaConsumer$MetaDataMonitorTask.run(SimpleKafkaConsumer.java:477) > at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) > at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) > at > java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) > at > java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) > at > java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) > at > java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) > at java.lang.Thread.run(Thread.java:745) -- This message was sent by Atlassian JIRA (v6.3.4#6332)