Hi all,When running GraphX applications on Spark, task scheduler may schedule
some tasks to be executed on RACK_LOCAL executors,but the tasks get halting in
that case, repeating print the following log information:
14-07-14 15:59:14 INFO [Executor task launch worker-6]
BlockFetcherIterator$BasicBlockFetcherIterator: Started 1 remote fetches in 3 ms
14-07-14 15:59:14 INFO [Executor task launch worker-1] BlockManager: Found
block rdd_29_38 locally
14-07-14 15:59:14 INFO [Executor task launch worker-1] BlockManager: Found
block rdd_29_38 locally
14-07-14 15:59:14 INFO [Executor task launch worker-1] BlockManager: Found
block rdd_29_38 locally
14-07-14 15:59:14 INFO [Executor task launch worker-1]
BlockFetcherIterator$BasicBlockFetcherIterator: maxBytesInFlight: 50331648,
targetRequestSize: 10066329
14-07-14 15:59:14 INFO [Executor task launch worker-1]
BlockFetcherIterator$BasicBlockFetcherIterator: Getting 300 non-empty blocks
out of 300 blocks
14-07-14 15:59:14 INFO [Executor task launch worker-1]
BlockFetcherIterator$BasicBlockFetcherIterator: Started 1 remote fetches in 3 ms
14-07-14 15:59:14 INFO [Executor task launch worker-0]
BlockFetcherIterator$BasicBlockFetcherIterator: maxBytesInFlight: 50331648,
targetRequestSize: 10066329
14-07-14 15:59:14 INFO [Executor task launch worker-0]
BlockFetcherIterator$BasicBlockFetcherIterator: Getting 300 non-empty blocks
out of 300 blocks
14-07-14 15:59:14 INFO [Executor task launch worker-0]
BlockFetcherIterator$BasicBlockFetcherIterator: Started 1 remote fetches in 3 ms
14-07-14 15:59:14 INFO [Executor task launch worker-2] BlockManager: Found
block rdd_29_2 locally
14-07-14 15:59:14 INFO [Executor task launch worker-2] BlockManager: Found
block rdd_29_2 locally
14-07-14 15:59:14 INFO [Executor task launch worker-2] BlockManager: Found
block rdd_29_2 locally
BlockManager's `get` and `getMultiple` are being called continually, and I
don't know why. Are there some rdds being recomputed?Thanks for your help.Qiping
