Re: feedback about SPARK-22683 needed

2017-12-11 Thread Xuefu Zhang
At Uber we have observed the same resource efficiency issue with dynamic allocation. Our workload is migrated from Hive on MR to Hive on Spark. We saw significant performance improvement (>2X) with our workload. We also expected big resource savings from this migration because there will be one sin

Re: Futures timeout exception in executor logs

2017-09-14 Thread Xuefu Zhang
I saw this quite often in our clusters. we have increased spark.executor.heartbeatInterval to 60s from the default value, which should help. The problem seems due to poor Spark driver performance and/or locking issues when it cannot process incoming events quickly enough. Thanks, Xuefu On Thu, Se

Re: welcoming Takuya Ueshin as a new Apache Spark committer

2017-02-13 Thread Xuefu Zhang
Congratulations, Takuya! --Xuefu On Mon, Feb 13, 2017 at 11:25 AM, Xiao Li wrote: > Congratulations, Takuya! > > Xiao > > 2017-02-13 11:24 GMT-08:00 Holden Karau : > >> Congratulations Takuya-san :D! >> >> On Mon, Feb 13, 2017 at 11:16 AM, Reynold Xin >> wrote: >> >>> Hi all, >>> >>> Takuya-sa