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https://issues.apache.org/jira/browse/HAMA-445?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13190428#comment-13190428
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Thomas Jungblut commented on HAMA-445:
--------------------------------------
bq. Does checkpoint interval here imply the number of supersteps before we
initiate a checkpoint process?
Yes.
bq. Should this be done within barrier synchronization period
There is already a part in the sync barrier that will do the checkpointing.
(arround line 250)
{noformat}
if (conf.getBoolean("bsp.checkpoint.enabled", false)) {
checkpoint(checkpointedPath(), bundle);
}
{noformat}
I guess it is enough to do somekind of modulo checking,
{noformat}
if(!disabled && getSuperStep() % interval == 0)
doCheckpoint
{noformat}
bq.Please let me know if I have the correct understanding.
Yes you have ;)
> Make configurable checkpointing
> -------------------------------
>
> Key: HAMA-445
> URL: https://issues.apache.org/jira/browse/HAMA-445
> Project: Hama
> Issue Type: Improvement
> Components: bsp
> Affects Versions: 0.4.0
> Reporter: Edward J. Yoon
> Labels: newbie
> Fix For: 0.5.0
>
>
> We should extend the BSPJob to let the user set the checkpoint intervals.
> bq. job.setCheckpointInterval(5);
> This method should put the parameter into the configuration of the job with a
> meaningful key, e.G. "bsp.checkpoint.interval".
> In the BSPPeerImpl we should check if this interval has been reached and make
> the checkpointing accordingly.
> Checkpointing gets called in BSPPeerImpl#sync(), there is already a condition
> which checks if checkpointing is enabled.
> Plus points:
> If you can provide an additional method in BSPJob that let's the user enable
> or disable checkpointing. Hint: Configuration key is:
> "bsp.checkpoint.enabled".
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