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Date: Sat, 9 Aug 2014 10:58:41 -0700
From: Andrew <redmumba@gmail.com>
To: Tyler Hobbs <tyler@datastax.com>, user@cassandra.apache.org
Message-ID: <etPan.53e66151.1190cde7.97fe@amcfague-mac>
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Subject: Re: too many open files
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I just had a generator that (in the incorrect way) had a cluster as a mem=
ber variable, and would call .connect() repeatedly. =C2=A0I =5Fthought=5F=
, incorrectly, that the Session was thread unsafe, and so I should reques=
t a separate Session each time=E2=80=94obviously wrong in hind sight.

There was no special logic; I had a restriction of about 128 connections =
per host, but the connections were in the 100s of thousands, like the OP =
mentioned. =C2=A0Again, I=E2=80=99ll see about reproducing it on Monday, =
but just wanted the repro steps (overall) to live somewhere in case I can=
=E2=80=99t. :)

Andrew

On August 8, 2014 at 4:08:50 PM, Tyler Hobbs (tyler=40datastax.com) wrote=
:


On =46ri, Aug 8, 2014 at 5:52 PM, Redmumba <redmumba=40gmail.com> wrote:
Just to chime in, I also ran into this issue when I was migrating to the =
Datastax client. Instead of reusing the session, I was opening a new sess=
ion each time. =46or some reason, even though I was still closing the ses=
sion on the client side, I was getting the same error.

Which driver=3F=C2=A0 If you can still reproduce this, would you mind ope=
ning a ticket=3F (https://datastax-oss.atlassian.net/secure/BrowseProject=
s.jspa=23all)


--
Tyler Hobbs
DataStax

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<html><head><style>body=7Bfont-family:Helvetica,Arial;font-size:13px=7D</=
style></head><body style=3D=22word-wrap: break-word; -webkit-nbsp-mode: s=
pace; -webkit-line-break: after-white-space;=22><div id=3D=22bloop=5Fcust=
omfont=22 style=3D=22font-family:Helvetica,Arial;font-size:13px; color: r=
gba(0,0,0,1.0); margin: 0px; line-height: auto;=22>I just had a generator=
 that (in the incorrect way) had a cluster as a member variable, and woul=
d call .connect() repeatedly. &nbsp;I =5Fthought=5F, incorrectly, that th=
e Session was thread unsafe, and so I should request a separate Session e=
ach time=E2=80=94obviously wrong in hind sight.</div><div id=3D=22bloop=5F=
customfont=22 style=3D=22font-family:Helvetica,Arial;font-size:13px; colo=
r: rgba(0,0,0,1.0); margin: 0px; line-height: auto;=22><br></div><div id=3D=
=22bloop=5Fcustomfont=22 style=3D=22font-family:Helvetica,Arial;font-size=
:13px; color: rgba(0,0,0,1.0); margin: 0px; line-height: auto;=22>There w=
as no special logic; I had a restriction of about 128 connections per hos=
t, but the connections were in the 100s of thousands, like the OP mention=
ed. &nbsp;Again, I=E2=80=99ll see about reproducing it on Monday, but jus=
t wanted the repro steps (overall) to live somewhere in case I can=E2=80=99=
t. :)</div> <div id=3D=22bloop=5Fsign=5F1407564282623975936=22 class=3D=22=
bloop=5Fsign=22><div><br></div><span style=3D=22font-family:helvetica,ari=
al;font-size:13px=22></span>Andrew<span></span></div> <br><p style=3D=22c=
olor:=23000;=22>On August 8, 2014 at 4:08:50 PM, Tyler Hobbs (<a href=3D=22=
mailto:tyler=40datastax.com=22>tyler=40datastax.com</a>) wrote:</p> <bloc=
kquote type=3D=22cite=22 class=3D=22clean=5Fbq=22><span><div><div></div><=
div>



<title></title>


<div dir=3D=22ltr=22>
<div class=3D=22gmail=5Fextra=22><br>
<div class=3D=22gmail=5Fquote=22>On =46ri, Aug 8, 2014 at 5:52 PM, Redmum=
ba
<span dir=3D=22ltr=22>&lt;<a href=3D=22mailto:redmumba=40gmail.com=22 tar=
get=3D=22=5Fblank=22>redmumba=40gmail.com</a>&gt;</span> wrote:<br>
<blockquote class=3D=22gmail=5Fquote=22 style=3D=22margin:0px 0px 0px 0.8=
ex;border-left:1px solid rgb(204,204,204);padding-left:1ex=22>
Just to chime in, I also ran into this issue when I was migrating
to the Datastax client. Instead of reusing the session, I was
opening a new session each time. =46or some reason, even though I was
still closing the session on the client side, I was getting the
same error.</blockquote>
</div>
<br></div>
<div class=3D=22gmail=5Fextra=22>Which driver=3F&nbsp; If you can still
reproduce this, would you mind opening a ticket=3F (<a href=3D=22https://=
datastax-oss.atlassian.net/secure/BrowseProjects.jspa=23all=22>https://da=
tastax-oss.atlassian.net/secure/BrowseProjects.jspa=23all</a>)<br>
</div>
<div class=3D=22gmail=5Fextra=22><br clear=3D=22all=22>
<br>
--<br>
<font color=3D=22=23888888=22>Tyler Hobbs<br>
<a href=3D=22http://datastax.com/=22 target=3D=22=5Fblank=22>DataStax</a>=
<br></font></div>
</div>


</div></div></span></blockquote></body></html>
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