<p dir="auto">From Stefán:</p>
<p dir="auto">So this is one of those "borderline" issues.</p>
<p dir="auto">It turns out that we have some sort of a wildcard catchall DNS here which means that no matter what URL you'd put into that test, it would always resolve to something "legal" since the result would end up being illegal.url.mycompany.com which would then resolve.</p>
<p dir="auto">So this is not so much an "issue" but a notice that this test can "fail" because of a weird network setup on the computer running the test.</p>
<p dir="auto">Hi</p>
<p dir="auto">I Used kafka indexing service from few month without trouble.<br>
today all task failing,with this log :</p>
<div class="snippet-clipboard-content notranslate position-relative overflow-auto" data-snippet-clipboard-copy-content="2018-03-15T13:23:46,676 WARN [task-runner-0-priority-0] io.druid.indexing.common.actions.RemoteTaskActionClient - Exception submitting action for task[index_kafka_deliveryV8_80723dbb64bdf54_icecioga]
io.druid.java.util.common.IOE: Scary HTTP status returned: 500 Server Error. Check your overlord logs for exceptions.
	at io.druid.indexing.common.actions.RemoteTaskActionClient.submit(RemoteTaskActionClient.java:95) [druid-indexing-service-0.12.0.jar:0.12.0]
	at io.druid.indexing.appenderator.ActionBasedSegmentAllocator.allocate(ActionBasedSegmentAllocator.java:53) [druid-indexing-service-0.12.0.jar:0.12.0]
	at io.druid.segment.realtime.appenderator.BaseAppenderatorDriver.getSegment(BaseAppenderatorDriver.java:221) [druid-server-0.12.0.jar:0.12.0]
	at io.druid.segment.realtime.appenderator.BaseAppenderatorDriver.append(BaseAppenderatorDriver.java:289) [druid-server-0.12.0.jar:0.12.0]
	at io.druid.segment.realtime.appenderator.StreamAppenderatorDriver.add(StreamAppenderatorDriver.java:167) [druid-server-0.12.0.jar:0.12.0]
	at io.druid.indexing.kafka.KafkaIndexTask.run(KafkaIndexTask.java:701) [druid-kafka-indexing-service-0.12.0.jar:0.12.0]
	at io.druid.indexing.overlord.ThreadPoolTaskRunner$ThreadPoolTaskRunnerCallable.call(ThreadPoolTaskRunner.java:444) [druid-indexing-service-0.12.0.jar:0.12.0]
	at io.druid.indexing.overlord.ThreadPoolTaskRunner$ThreadPoolTaskRunnerCallable.call(ThreadPoolTaskRunner.java:416) [druid-indexing-service-0.12.0.jar:0.12.0]
	at java.util.concurrent.FutureTask.run(FutureTask.java:266) [?:1.8.0_151]
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) [?:1.8.0_151]
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) [?:1.8.0_151]
	at java.lang.Thread.run(Thread.java:748) [?:1.8.0_151]```

when we take a look at coordinator log there is  :

`Caused by: org.postgresql.util.PSQLException: ERROR: duplicate key value violates unique constraint &quot;druid_pendingsegments_sequence_name_prev_id_sha1_key&quot;`


is it a known/common mistake? how can I fix it?"><pre lang="2018-03-15T13:19:42,961" class="notranslate"><code class="notranslate">2018-03-15T13:23:46,676 WARN [task-runner-0-priority-0] io.druid.indexing.common.actions.RemoteTaskActionClient - Exception submitting action for task[index_kafka_deliveryV8_80723dbb64bdf54_icecioga]
io.druid.java.util.common.IOE: Scary HTTP status returned: 500 Server Error. Check your overlord logs for exceptions.
	at io.druid.indexing.common.actions.RemoteTaskActionClient.submit(RemoteTaskActionClient.java:95) [druid-indexing-service-0.12.0.jar:0.12.0]
	at io.druid.indexing.appenderator.ActionBasedSegmentAllocator.allocate(ActionBasedSegmentAllocator.java:53) [druid-indexing-service-0.12.0.jar:0.12.0]
	at io.druid.segment.realtime.appenderator.BaseAppenderatorDriver.getSegment(BaseAppenderatorDriver.java:221) [druid-server-0.12.0.jar:0.12.0]
	at io.druid.segment.realtime.appenderator.BaseAppenderatorDriver.append(BaseAppenderatorDriver.java:289) [druid-server-0.12.0.jar:0.12.0]
	at io.druid.segment.realtime.appenderator.StreamAppenderatorDriver.add(StreamAppenderatorDriver.java:167) [druid-server-0.12.0.jar:0.12.0]
	at io.druid.indexing.kafka.KafkaIndexTask.run(KafkaIndexTask.java:701) [druid-kafka-indexing-service-0.12.0.jar:0.12.0]
	at io.druid.indexing.overlord.ThreadPoolTaskRunner$ThreadPoolTaskRunnerCallable.call(ThreadPoolTaskRunner.java:444) [druid-indexing-service-0.12.0.jar:0.12.0]
	at io.druid.indexing.overlord.ThreadPoolTaskRunner$ThreadPoolTaskRunnerCallable.call(ThreadPoolTaskRunner.java:416) [druid-indexing-service-0.12.0.jar:0.12.0]
	at java.util.concurrent.FutureTask.run(FutureTask.java:266) [?:1.8.0_151]
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) [?:1.8.0_151]
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) [?:1.8.0_151]
	at java.lang.Thread.run(Thread.java:748) [?:1.8.0_151]```

when we take a look at coordinator log there is  :

`Caused by: org.postgresql.util.PSQLException: ERROR: duplicate key value violates unique constraint "druid_pendingsegments_sequence_name_prev_id_sha1_key"`


is it a known/common mistake? how can I fix it?
</code></pre></div>