paul-rogers commented on pull request #12058:
URL: https://github.com/apache/druid/pull/12058#issuecomment-995327640
One of the steps failed in a unit test which appears due to flaky behavior:
```text
[ERROR]
testReconnectWithCacheAndPrefetch(org.apache.druid.data.input.impl.prefetch.PrefetchableTextFilesFirehoseFactoryTest)
Time elapsed: 8.224 s <<< ERROR!
java.lang.RuntimeException: java.util.concurrent.TimeoutException
at
org.apache.druid.data.input.impl.prefetch.Fetcher.openObjectFromLocal(Fetcher.java:226)
at
org.apache.druid.data.input.impl.prefetch.Fetcher.next(Fetcher.java:177)
at
org.apache.druid.data.input.impl.prefetch.PrefetchableTextFilesFirehoseFactory$2.next(PrefetchableTextFilesFirehoseFactory.java:239)
at
org.apache.druid.data.input.impl.prefetch.PrefetchableTextFilesFirehoseFactory$2.next(PrefetchableTextFilesFirehoseFactory.java:225)
at
org.apache.druid.data.input.impl.FileIteratingFirehose.getNextLineIterator(FileIteratingFirehose.java:105)
at
org.apache.druid.data.input.impl.FileIteratingFirehose.hasMore(FileIteratingFirehose.java:66)
at
org.apache.druid.data.input.impl.prefetch.PrefetchableTextFilesFirehoseFactoryTest.testReconnectWithCacheAndPrefetch(PrefetchableTextFilesFirehoseFactoryTest.java:356)
```
Took a look a the test. The Firehose is completely separate from any of the
areas I changed. Perhaps there is a race condition in the code, though brief
inspection did not reveal the cause. The test works fine in Maven and in the
IDE on my machine. Anyone seen this one fail previously? Added more detail to
the exception in case if fails again. Let's not hold up reviews due to this
test.
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