try setting the option --driver-memory 4G On Tue, Jun 14, 2016 at 3:52 PM, Ben Slater <ben.sla...@instaclustr.com> wrote:
> A high level shot in the dark but in our testing we found Spark 1.6 a lot > more reliable in low memory situations (presumably due to > https://issues.apache.org/jira/browse/SPARK-10000). If it’s an option, > probably worth a try. > > Cheers > Ben > > On Wed, 15 Jun 2016 at 08:48 Cassa L <lcas...@gmail.com> wrote: > >> Hi, >> I would appreciate any clue on this. It has become a bottleneck for our >> spark job. >> >> On Mon, Jun 13, 2016 at 2:56 PM, Cassa L <lcas...@gmail.com> wrote: >> >>> Hi, >>> >>> I'm using spark 1.5.1 version. I am reading data from Kafka into Spark and >>> writing it into Cassandra after processing it. Spark job starts fine and >>> runs all good for some time until I start getting below errors. Once these >>> errors come, job start to lag behind and I see that job has scheduling and >>> processing delays in streaming UI. >>> >>> Worker memory is 6GB, executor-memory is 5GB, I also tried to tweak >>> memoryFraction parameters. Nothing works. >>> >>> >>> 16/06/13 21:26:02 INFO MemoryStore: ensureFreeSpace(4044) called with >>> curMem=565394, maxMem=2778495713 >>> 16/06/13 21:26:02 INFO MemoryStore: Block broadcast_69652_piece0 stored as >>> bytes in memory (estimated size 3.9 KB, free 2.6 GB) >>> 16/06/13 21:26:02 INFO TorrentBroadcast: Reading broadcast variable 69652 >>> took 2 ms >>> 16/06/13 21:26:02 WARN MemoryStore: Failed to reserve initial memory >>> threshold of 1024.0 KB for computing block broadcast_69652 in memory. >>> 16/06/13 21:26:02 WARN MemoryStore: Not enough space to cache >>> broadcast_69652 in memory! (computed 496.0 B so far) >>> 16/06/13 21:26:02 INFO MemoryStore: Memory use = 556.1 KB (blocks) + 2.6 GB >>> (scratch space shared across 0 tasks(s)) = 2.6 GB. Storage limit = 2.6 GB. >>> 16/06/13 21:26:02 WARN MemoryStore: Persisting block broadcast_69652 to >>> disk instead. >>> 16/06/13 21:26:02 INFO BlockManager: Found block rdd_100761_1 locally >>> 16/06/13 21:26:02 INFO Executor: Finished task 0.0 in stage 71577.0 (TID >>> 452316). 2043 bytes result sent to driver >>> >>> >>> Thanks, >>> >>> L >>> >>> >> -- > ———————— > Ben Slater > Chief Product Officer > Instaclustr: Cassandra + Spark - Managed | Consulting | Support > +61 437 929 798 >