SparkQA commented on issue #26516: [SPARK-29893] improve the local shuffle reader performance by changing the reading task number from 1 to multi. URL: https://github.com/apache/spark/pull/26516#issuecomment-555328189 **[Test build #114047 has finished](https://amplab.cs.berkeley.edu/jenkins/job/SparkPullRequestBuilder/114047/testReport)** for PR 26516 at commit [`20db2a8`](https://github.com/apache/spark/commit/20db2a80d458bfaba08af359b02318f0fedb5645). * This patch **fails Spark unit tests**. * This patch merges cleanly. * This patch adds the following public classes _(experimental)_: * `case class CoalescedPartitioning(numPartitions: Int) extends Partitioning ` * `case class UnknownPartitioning(numPartitions: Int) extends Partitioning` * `case class RoundRobinPartitioning(numPartitions: Int) extends Partitioning` * `case class OptimizeLocalShuffleReaderInProbeSide(conf: SQLConf) extends Rule[SparkPlan] `
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