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Date: Mon, 13 Oct 2014 13:42:39 -0700
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 <CAEDUwd3H7J6yBQbfixxSuemzN9S3gaRObkwRttFDZW9_PHwjQA@mail.gmail.com>
Subject: Re: validation compaction
From: Robert Coli <rcoli@eventbrite.com>
To: "user@cassandra.apache.org" <user@cassandra.apache.org>
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On Mon, Oct 13, 2014 at 1:04 PM, S C <asf11@outlook.com> wrote:

> I have started repairing a 10 node cluster with one of the table having >
> 1TB of data. I notice that the validation compaction actually shows >3 TB
> in the "nodetool compactionstats" bytes total. However, I have less than
> 1TB data on the machine. If I take into consideration of 3 replicas then
> 3TB makes sense. Per my understanding, validation does only care about data
> local to the machine running validation compaction. Am I missing some thing
> here? Any help is much appreciated.
>

Compression is enabled by default; it's showing the uncompressed data size.
Your 1TB of data would be 3TB without compression.

=Rob

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<div dir=3D"ltr"><div class=3D"gmail_extra"><div class=3D"gmail_quote">On M=
on, Oct 13, 2014 at 1:04 PM, S C <span dir=3D"ltr">&lt;<a href=3D"mailto:as=
f11@outlook.com" target=3D"_blank">asf11@outlook.com</a>&gt;</span> wrote:<=
br><blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left=
:1px #ccc solid;padding-left:1ex">


<div><div dir=3D"ltr">I have started repairing a 10 node cluster with one o=
f the table having &gt; 1TB of data. I notice that the validation compactio=
n actually shows &gt;3 TB in the &quot;nodetool compactionstats&quot; bytes=
 total. However, I have less than 1TB data on the machine. If I take into c=
onsideration of 3 replicas then 3TB makes sense. Per my understanding, vali=
dation does only care about data local to the machine running validation co=
mpaction. Am I missing some thing here? Any help is much appreciated.=C2=A0=
<br></div></div></blockquote><div><br></div><div>Compression is enabled by =
default; it&#39;s showing the uncompressed data size. Your 1TB of data woul=
d be 3TB without compression.</div><div><br></div><div>=3DRob</div><div>=C2=
=A0</div></div></div></div>

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