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In-Reply-To: <4D91BB06.3080806@hiramoto.org>
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Date: Wed, 30 Mar 2011 10:32:26 +0800
Message-ID: <AANLkTiky4ok4_E4V4Zk9+n4NoGsEZO1VZjKAyGf6Qy1C@mail.gmail.com>
Subject: Re: Compaction doubles disk space
From: Sheng Chen <chensheng2010@gmail.com>
To: user@cassandra.apache.org
Content-Type: multipart/alternative; boundary=90e6ba6e8bacc7e268049fa9fcea

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Yes.
I think at least we can remove the tombstones for each sstable first, and
then do the merge.

2011/3/29 Karl Hiramoto <karl@hiramoto.org>

> Would it be possible to improve the current compaction disk space issue by
>  compacting one only a few SSTables at a time then imediately deleting the
> old one?  Looking at the logs it seems like deletions of old SSTables are
> taking longer than necessary.
>
> --
> Karl
>

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Yes.<div>I think at least we can remove the tombstones for each sstable fir=
st, and then do the merge.<br><br><div class=3D"gmail_quote">2011/3/29 Karl=
 Hiramoto <span dir=3D"ltr">&lt;<a href=3D"mailto:karl@hiramoto.org">karl@h=
iramoto.org</a>&gt;</span><br>
<blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1p=
x #ccc solid;padding-left:1ex;">Would it be possible to improve the current=
 compaction disk space issue by =A0compacting one only a few SSTables at a =
time then imediately deleting the old one? =A0Looking at the logs it seems =
like deletions of old SSTables are taking longer than necessary.<br>

<br>
--<br><font color=3D"#888888">
Karl<br>
</font></blockquote></div><br></div>

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