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From: Anishek Agarwal <anishek@gmail.com>
Date: Fri, 9 Oct 2015 17:19:57 +0530
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 <CADYwe74-oCbnygq_AYMRhZXN2cKKHo4C5SJNLHvm=rHA_VDYew@mail.gmail.com>
Subject: Re: compaction with LCS
To: "user@cassandra.apache.org" <user@cassandra.apache.org>
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Looks like some of the nodes have higher sstables on L0 and compaction is
running there, so only few nodes run compaction at a time and the
preference is given to lower level nodes for compaction before going to
higher levels ? so is compaction cluster aware then ?


On Fri, Oct 9, 2015 at 5:17 PM, Anishek Agarwal <anishek@gmail.com> wrote:

> hello,
>
> on doing cfstats for the column family i see
>
> SSTables in each level: [1, 10, 109/100, 1, 0, 0, 0, 0, 0]
>
> i thought compaction would trigger since the 3rd level tables are move
> than expected number,
>
> but on doing compactionstats its shows "n/a" -- any reason why its not
> triggering, should i be worried ?
>
> we have 5 node cluster running 2.0.15 cassandra version,
>
> thanks
> anishek
>

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<div dir=3D"ltr">Looks like some of the nodes have higher sstables on L0 an=
d compaction is running there, so only few nodes run compaction at a time a=
nd the preference is given to lower level nodes for compaction before going=
 to higher levels ? so is compaction cluster aware then ?<div><br></div></d=
iv><div class=3D"gmail_extra"><br><div class=3D"gmail_quote">On Fri, Oct 9,=
 2015 at 5:17 PM, Anishek Agarwal <span dir=3D"ltr">&lt;<a href=3D"mailto:a=
nishek@gmail.com" target=3D"_blank">anishek@gmail.com</a>&gt;</span> wrote:=
<br><blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-lef=
t:1px #ccc solid;padding-left:1ex"><div dir=3D"ltr">hello,<div><br></div><d=
iv>on doing cfstats for the column family i see=C2=A0</div><div><br></div><=
div>SSTables in each level: [1, 10, 109/100, 1, 0, 0, 0, 0, 0]<br></div><di=
v><br></div><div>i thought compaction would trigger since the 3rd level tab=
les are move than expected number,=C2=A0</div><div><br></div><div>but on do=
ing compactionstats its shows &quot;n/a&quot; -- any reason why its not tri=
ggering, should i be worried ?</div><div><br></div><div>we have 5 node clus=
ter running 2.0.15 cassandra version,=C2=A0</div><div><br></div><div>thanks=
</div><span class=3D"HOEnZb"><font color=3D"#888888"><div>anishek</div></fo=
nt></span></div>
</blockquote></div><br></div>

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