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From "Noble Paul (JIRA)" <>
Subject [jira] Commented: (SOLR-1439) Enhance PollInterval for Java Replication
Date Thu, 17 Sep 2009 03:41:57 GMT


Noble Paul commented on SOLR-1439:

isn't it same as SOLR-1431?

> Enhance PollInterval for Java Replication
> -----------------------------------------
>                 Key: SOLR-1439
>                 URL:
>             Project: Solr
>          Issue Type: New Feature
>          Components: replication (java)
>         Environment: ALL
>            Reporter: Bill Bell
>             Fix For: 1.4
> I am not a huge fan of PollInterval. It would be great to add an option to get the Index
based on exact time: PollTime="*/15 * * * *" That would run at every 15 minutes based on the
clock. i.e. 1:00pm, 1:15pm, 1:30pm, 1:45pm, etc. All my slaves are sync'd using NTP, so this
would work better. Since each slave starts differently, we cannot set the PollInterval="00:15:00"
since they would get different indexes based on when they start. The other option would be
to suspend polling - and start - which would be very manual I guess. Setting the PollInterval
to 10 seconds would be getting a new index when the old one is still warming up. Even 10 seconds
interval would not be good, since we get so many updates, each server would have different
indexes. With Snap we don't have this issue.
> We get SOLR updates frequently and since they are large we cannot wait to do a commit
at the 15 minute mark using cron. Optimize just takes too long.
> On our system we need to limit how often the slaves get the new index. We would like
all slaves to get the index at the same time.
> From Noble Paul:
> The default pollInterval can behave the way you want (so that the fetches are synchronized
in time by the clock). Raise a separate issue and we can fix it

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