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Posted to issues@iceberg.apache.org by GitBox <gi...@apache.org> on 2019/09/06 00:44:08 UTC
[GitHub] [incubator-iceberg] rdblue opened a new pull request #455: Reduce
HiveCatalog client pool size in flaky tests
rdblue opened a new pull request #455: Reduce HiveCatalog client pool size in flaky tests
URL: https://github.com/apache/incubator-iceberg/pull/455
This reduces the HiveCatalog client pool to 1 client. Previously, the pool size was 2, with another 1-client pool used for cleanup, and at least one client created by Spark. Spark has a [method that uses a cached client or creates a new one](https://github.com/apache/spark/blob/master/sql/hive/src/main/scala/org/apache/spark/sql/hive/client/HiveClientImpl.scala#L274-L282) that could be causing multiple clients to get created. If that's the case, then the small 5-thread metastore would run out of handlers when called from parallel test cases.
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