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From Shalin Shekhar Mangar <>
Subject Re: Expunging Deletes
Date Mon, 29 Sep 2014 13:35:58 GMT
Yes, expungeDeletes=true will remove all deleted docs from the disk but it
also requires merging all segments that have any deleted docs which, in
your case, could mean a re-write of the entire index. So it'd be an
expensive operation. Usually deletes are removed in the normal course of
indexing as segments are merged together.

On Sat, Sep 27, 2014 at 8:42 PM, Eric Katherman <> wrote:

> I'm running into memory issues and wondering if I should be using
> expungeDeletes on commits.  The server in question at the moment has 450k
> documents in the collection and represents 15GB on disk.  There are also
> 700k+ "Deleted Docs" and I'm guessing that is part of the disk space
> consumption but I am not having any luck getting that cleared out.  I
> noticed the expungeDeletes=false in some of the log output related to
> commit but didn't try setting it to true yet. Will this clear those deleted
> documents and recover that space?  Or should something else already be
> managing that but maybe isn't configured correctly?
> Our data is user specific data, each customer has their own database
> structure so it varies with each user.  They also add/remove data fairly
> frequently in many cases.  To compare another collection of the same data
> type, there are 1M documents and about 120k deleted docs but disk space is
> only 6.3GB.
> Hoping someone can share some advice about how to manage this.
> Thanks,
> Eric

Shalin Shekhar Mangar.

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