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[SPARK-5484][GraphX] Periodically do checkpoint in Pregel #15125

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[SPARK-5484][GraphX] Periodically do checkpoint in Pregel #15125

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3834981
test
Sep 16, 2016
166fd6d
period do checkpoint in pregel
Sep 16, 2016
b119e4a
remove unused code
Sep 16, 2016
d183a7c
fix mima
Sep 16, 2016
352dcb2
fix mima
Sep 16, 2016
ad82e45
fix scala style fail
Sep 16, 2016
e786838
rebase upstream
Jan 17, 2017
a25d00c
code rebase
Feb 11, 2017
38e6238
Update a couple of test suite package names, and enhance the
Feb 14, 2017
f2efef6
Merge pull request #1 from VideoAmp/spark-5484-periodic_pregel_checkp…
dding3 Feb 16, 2017
194dc27
update checkpoint interval and some comments
Feb 17, 2017
9d7e796
add config value to controll checkpoint interval in pergel
Feb 17, 2017
dae94aa
document spark.graphx.pregel.checkpointInterval into graphx-programmi…
Feb 19, 2017
dd6c366
remove details of checkpointer in pregel implementation sketch
Feb 19, 2017
2639eb1
remove unused variable in pregel sketch implementation
Feb 19, 2017
11bc349
small changes for documentation
Feb 23, 2017
9a6fd1f
mv PeriodicRDDCheckpointer to rdd.util and explain why use cache in P…
Apr 19, 2017
5015b44
fix scalastyle error
Apr 20, 2017
24d4ad6
turn off checkpoint graph and messages in pregel by default
Apr 22, 2017
ec62659
recommend a good value in checkpoint interval in pregel
Apr 23, 2017
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3 changes: 2 additions & 1 deletion docs/graphx-programming-guide.md
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Expand Up @@ -709,7 +709,8 @@ messages remaining.

The following is the type signature of the [Pregel operator][GraphOps.pregel] as well as a *sketch*
of its implementation (note: to avoid stackOverflowError due to long lineage chains, pregel support periodcally
checkpoint graph and messages by setting "spark.graphx.pregel.checkpointInterval"):
checkpoint graph and messages by setting "spark.graphx.pregel.checkpointInterval" to a positive number,
say 10. And set checkpoint directory as well using SparkContext.setCheckpointDir(directory: String)):
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@felixcheung felixcheung Apr 24, 2017

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nit: this suggestion seems a bit soft :) how did it come up with the value 10 earlier?

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@dding3 dding3 Apr 24, 2017

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I reference the value in LDA and other ml algorithms in spark, by default their checkpointInterval is set to 10.


{% highlight scala %}
class GraphOps[VD, ED] {
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