ODIn/spark-instrumented-optimizer
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Author SHA1 Message Date
Mosharaf Chowdhury 0416cc22d2 Picking peers weighted by the number of rare blocks they have. A block is rare if there are at most 2 copies in the neighborhood. Better number can be used (some function of neighborhood size) 2011-02-15 16:27:44 -08:00
Mosharaf Chowdhury cf81da9485 Optimization: Master sends out at least one copy of each block first regardless of whatever a client is asking for. Once one copy of each block is out, Master then responds to specific blocks from individual receivers. 2011-02-14 15:08:33 -08:00
Mosharaf Chowdhury 2b946fb2d1 pickBlockRarestFirst and gossips commented OUT for now. 
Problem with the rarestFirst implemention is that we are picking peers randomly first and then picking blocks from the random peer using rarestFirst. NOT the right away to do it. It should be the other way around.
Problem with gossip is that peers might end up overwriting newer information by older ones. To fix that we either have to have timestamps or must match the bitVectors before overwriting.
 2011-02-13 13:53:15 -08:00
Mosharaf Chowdhury ca2895ebb0 Fix in rarestFirst implemenation. 
If there are more than one rarest blocks, pick randomly between them (was deterministic before)
 2011-02-10 20:37:44 -08:00
Mosharaf Chowdhury 520bbdc7e3 Peers now gossip about their neighbors when they talk. 2011-02-10 20:15:30 -08:00
Matei Zaharia dc24aecd8f Close record readers in HadoopFile after finishing a split 2011-02-10 12:07:48 -08:00
Mosharaf Chowdhury 441462bc7f Fixed some warnings during compilation. 2011-02-09 12:11:43 -08:00
Mosharaf Chowdhury 1a73c0d265 Merged with master. Using sbt. 2011-02-09 10:48:48 -08:00
Mosharaf Chowdhury 495b38658e Merge branch 'master' into mos-bt 2011-02-09 10:40:23 -08:00
Matei Zaharia 99f3f23efa Changed default shuffle to LocalFileShuffle because it's way faster for small files 2011-02-08 17:03:03 -08:00
Matei Zaharia ec28b607fd Merge branch 'master' into sbt 
Conflicts:
	Makefile
	core/src/main/java/spark/compress/lzf/LZF.java
	core/src/main/java/spark/compress/lzf/LZFInputStream.java
	core/src/main/java/spark/compress/lzf/LZFOutputStream.java
	core/src/main/native/spark_compress_lzf_LZF.c
	run
 2011-02-02 00:25:54 -08:00
Matei Zaharia e5c4cd8a5e Made examples and core subprojects 2011-02-01 15:11:08 -08:00