Your basic assumptions about the underlying mechanisms are incorrect.
The size of the index has nothing to do with the transaction logs...
and transaction logs are never "written to index" except in recovery.
You would see the same index size behavior w/o transaction logs, and
it has to do with some data being cached in memory on soft commits but
always being flushed to disk on hard commits.

-Yonik


On Sun, Mar 15, 2015 at 9:05 AM, vidit.asthana <vidit.astha...@gmail.com> wrote:
> I want to know what all thing gets written to index from tlog directory
> whenever a soft commit is issued.
>
> I have a test SolrCloud setup and I can see that even if I disable the
> hardcommit, and if I only issue soft commits, then also index directory
> keeps increasing little by little, so I am presuming that something gets
> written to it.
>
> When I issue a hard commit then index directory size grows drastically - as
> expected.
>
> I have read this awesome post -
> http://lucidworks.com/blog/understanding-transaction-logs-softcommit-and-commit-in-sorlcloud/
> but this doesn't explain the above mentioned behavior.
>
> Thanks in advance.
>
> Vidit
>
>
>
> --
> View this message in context: 
> http://lucene.472066.n3.nabble.com/Solr-tlog-and-soft-commit-tp4193105.html
> Sent from the Solr - User mailing list archive at Nabble.com.

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