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
