Github user dongjoon-hyun commented on the issue: https://github.com/apache/spark/pull/23119 [ChunkFetchIntegrationSuite](https://issues.apache.org/jira/browse/SPARK-25692) seems to be very flacky in Maven build. This causes two consequtive irrelevant failures in this PR. ``` [ERROR] Tests run: 5, Failures: 1, Errors: 0, Skipped: 0, Time elapsed: 5.183 s <<< FAILURE! - in org.apache.spark.network.ChunkFetchIntegrationSuite [ERROR] fetchBothChunks(org.apache.spark.network.ChunkFetchIntegrationSuite) Time elapsed: 5.069 s <<< FAILURE! java.lang.AssertionError: Timeout getting response from the server at org.apache.spark.network.ChunkFetchIntegrationSuite.fetchChunks(ChunkFetchIntegrationSuite.java:176) at org.apache.spark.network.ChunkFetchIntegrationSuite.fetchBothChunks(ChunkFetchIntegrationSuite.java:210) ```
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