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Date: Mon, 1 Jun 2015 10:26:19 -0700
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 <CAEDUwd2xoyhVdwP_o6bP+T4uWscmkOJPtmi94qRFkGiNVBrhhg@mail.gmail.com>
Subject: Re: Minor Compactions Not Triggered
From: Robert Coli <rcoli@eventbrite.com>
To: "user@cassandra.apache.org" <user@cassandra.apache.org>,
 Anuj Wadehra <anujw_2003@yahoo.co.in>
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On Sun, May 31, 2015 at 11:37 AM, Anuj Wadehra <anujw_2003@yahoo.co.in>
wrote:

> 2. We thought that CQL compaction subproperty of *tombstone_threshold*
> will help us after major compactions. This property will ensure that even
> if we have one huge sstable, once tombstone threshold of 20% has reached,
> sstables will be compacted and tombstones will be dropped after
> gc_grace_periods (even if there no similar sized sstables as need by STCS).
> But in our initial testing, single huge sstable is not getting compacted
> even if we drop all rows in it and gc_grace_period has passed.  *Why
> tombstone_threshold is behaving like that?*
>

https://issues.apache.org/jira/browse/CASSANDRA-6654 ?

=Rob

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<div dir=3D"ltr"><div class=3D"gmail_extra"><div class=3D"gmail_quote">On S=
un, May 31, 2015 at 11:37 AM, Anuj Wadehra <span dir=3D"ltr">&lt;<a href=3D=
"mailto:anujw_2003@yahoo.co.in" target=3D"_blank">anujw_2003@yahoo.co.in</a=
>&gt;</span> wrote:<br><blockquote class=3D"gmail_quote" style=3D"margin:0p=
x 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);bo=
rder-left-style:solid;padding-left:1ex"><div style=3D"color:rgb(0,0,0);font=
-family:garamond,&#39;new york&#39;,times,serif;font-size:12px;background-c=
olor:rgb(255,255,255)"><div>2. We thought that CQL compaction subproperty o=
f <b>tombstone_threshold</b> will help us after major compactions. This pro=
perty will ensure that even if we have one huge sstable, once tombstone thr=
eshold of 20% has reached, sstables will be compacted and tombstones will b=
e dropped after gc_grace_periods (even if there no similar sized sstables a=
s need by STCS). But in our initial testing, single huge sstable is not get=
ting compacted even if we drop all rows in it and gc_grace_period has passe=
d.=C2=A0 <b>Why tombstone_threshold is behaving like that?</b></div></div><=
/blockquote><div><br></div><div><a href=3D"https://issues.apache.org/jira/b=
rowse/CASSANDRA-6654">https://issues.apache.org/jira/browse/CASSANDRA-6654<=
/a> ?<br></div><div><br></div><div>=3DRob</div></div></div></div>

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