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From Erick Erickson <>
Subject Re: Problem while replicating solr
Date Mon, 05 Sep 2011 14:02:46 GMT
OK, then you have several things going on here if I'm reading this right.

1> you have very little spare room on your slave index. This will considerably
     slow down your disk writes.
2> You are optimizing for each delta index, forcing the entire index to be
      replicated each time. This is probably unnecessary, think about optimizing
      once a day/week/whatever.
3> Your network is slow, although that may be a function of <1>. have you
       tried copying your 80G index to another machine?
4> You will not be able to run your slave with so little extra space
reliably. I said
      that replication may take *at least* double the space. Actually,
to be safe you
      should have triple.
5> you may be in the range you have to consider sharding.
6> the merge factor is irrelevant on slaves, it's ignored. It only has
an effect on
     the master
7> you may want to consider taking steps to reduce the size of your
index. In particular,
     examine whether you need to store all the fields you store.
Here's a great place to
     start answering that question:


On Mon, Sep 5, 2011 at 12:52 AM, shinkanze <> wrote:
> erik
> it takes 20 -25 minutes to transver the index::::
> we have a setting in solr  to replicate on : startup,commit and optimize
> rajat
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