Github user wangyum commented on the issue:
https://github.com/apache/spark/pull/20080
@srowen @jiangxb1987 I have test on my cluster with this patch.
```
bin/spark-sql --master yarn --conf spark.dynamicAllocation.enabled=true
--conf spark.shuffle.service.enabled=true --conf
spark.dynamicAllocation.executorIdleTimeout=0
```
```
18/01/09 05:49:03.452 INFO DAGScheduler: Job 0 finished: processCmd at
CliDriver.java:376, took 26.196061 s
750000000
Time taken: 26.383 seconds, Fetched 1 row(s)
18/01/09 05:49:03.455 INFO SparkSQLCLIDriver: Time taken: 26.383 seconds,
Fetched 1 row(s)
spark-sql> 18/01/09 05:49:03.479 INFO ExecutorAllocationManager: Request to
remove executorIds: 972
```
`05:49:03.479 - 05:49:03.455 = 24 ms`
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