Failed to publish segments because of [java.lang.RuntimeException: Aborting transaction!].

Failed to publish segments because of [java.lang.RuntimeException: Aborting transaction!].

### Affected Version

\>=0.15.1-incubating

### Description

```java
2019-09-28T12:17:34,157 ERROR [task-runner-0-priority-0] org.apache.druid.indexing.seekablestream.SeekableStreamIndexTaskRunner - Encountered exception while running task.
java.util.concurrent.ExecutionException: org.apache.druid.java.util.common.ISE: Failed to publish segments because of [java.lang.RuntimeException: Aborting transaction!].
at com.google.common.util.concurrent.AbstractFuture$Sync.getValue(AbstractFuture.java:299) ~[guava-16.0.1.jar:?]
at com.google.common.util.concurrent.AbstractFuture$Sync.get(AbstractFuture.java:286) ~[guava-16.0.1.jar:?]
at com.google.common.util.concurrent.AbstractFuture.get(AbstractFuture.java:116) ~[guava-16.0.1.jar:?]
at org.apache.druid.indexing.seekablestream.SeekableStreamIndexTaskRunner.runInternal(SeekableStreamIndexTaskRunner.java:753) ~[druid-indexing-service-0.15.1-incubating.jar:0.15.1-incubating]
at org.apache.druid.indexing.seekablestream.SeekableStreamIndexTaskRunner.run(SeekableStreamIndexTaskRunner.java:246) [druid-indexing-service-0.15.1-incubating.jar:0.15.1-incubating]
at org.apache.druid.indexing.seekablestream.SeekableStreamIndexTask.run(SeekableStreamIndexTask.java:167) [druid-indexing-service-0.15.1-incubating.jar:0.15.1-incubating]
at org.apache.druid.indexing.overlord.SingleTaskBackgroundRunner$SingleTaskBackgroundRunnerCallable.call(SingleTaskBackgroundRunner.java:419) [druid-indexing-service-0.15.1-incubating.jar:0.15.1-incubating]
at org.apache.druid.indexing.overlord.SingleTaskBackgroundRunner$SingleTaskBackgroundRunnerCallable.call(SingleTaskBackgroundRunner.java:391) [druid-indexing-service-0.15.1-incubating.jar:0.15.1-incubating]
at java.util.concurrent.FutureTask.run(FutureTask.java:266) [?:1.8.0_212]
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) [?:1.8.0_212]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) [?:1.8.0_212]
at java.lang.Thread.run(Thread.java:748) [?:1.8.0_212]
Caused by: org.apache.druid.java.util.common.ISE: Failed to publish segments because of [java.lang.RuntimeException: Aborting transaction!].
at org.apache.druid.segment.realtime.appenderator.BaseAppenderatorDriver.lambda$publishInBackground$8(BaseAppenderatorDriver.java:602) ~[druid-server-0.15.1-incubating.jar:0.15.1-incubating]
... 4 more
```

Start with BaseAppenderatorDriver.java at publishInBackground and trace the failure back through SeekableStreamIndexTaskRunner.java using the provided stack trace. Reproduce the segment-publishing error on the affected Druid version and determine the transaction failure's cause; done means the failure is resolved or its required fix is clearly isolated and verified.

Written by the indexing model from the issue text.