Mailing-List: contact user-help@cassandra.apache.org; run by ezmlm
Precedence: bulk
Reply-To: user@cassandra.apache.org
Received-SPF: pass (athena.apache.org: message received from 54.164.171.186
 which is an MX secondary for user@cassandra.apache.org)
Message-ID: 
 <1429553271.90922.YahooMailAndroidMobile@web192904.mail.sg3.yahoo.com>
Date: Tue, 21 Apr 2015 02:07:51 +0800
From: Anuj Wadehra <anujw_2003@yahoo.co.in>
Subject: Re: Getting " ParNew GC in ... CMS Old Gen ... " in logs
To: "user@cassandra.apache.org" <user@cassandra.apache.org>
In-Reply-To: 
 <CAMZxNF7tu9EZR_VYZ5UrJVNR_ugqEYUu+JWm1M-xEanokNbutA@mail.gmail.com>
MIME-Version: 1.0
Content-Type: multipart/alternative;
 boundary="1871113123-1297044192-1429553271=:90922"

--1871113123-1297044192-1429553271=:90922
Content-Type: text/plain; charset=iso-8859-1
Content-Transfer-Encoding: quoted-printable

I think this is just saying that young gen collection using Par new collect=
or took 248 seconds. This is quite normal with CMS unless it happens too fr=
equenltly several times in a sec. I think query time has more to do with re=
ad timeout in yaml. Try increasing it. If its a range query then please inc=
rease range timeout in yaml.=A0=0A=0A=0AThanks=0A=0AAnuj Wadehra=0A=0ASent =
from Yahoo Mail on Android=0A=0AFrom:"shahab" <shahab.mokari@gmail.com>=0AD=
ate:Mon, 20 Apr, 2015 at 9:59 pm=0ASubject:Getting " ParNew GC in ... CMS O=
ld Gen ... " in logs=0A=0AHi,=0A=0A=0AI am keep getting following line in t=
he cassandra logs, apparently something related to Garbage Collection. And =
I guess this is one of the signs why i do not get any response (i get time-=
out) when I query large volume of data ?!!!=A0=0A=0A=0A=A0ParNew GC in 248m=
s.=A0 CMS Old Gen: 453244264 -> 570471312; Par Eden Space: 167712624 -> 0; =
Par Survivor Space: 0 -> 20970080=0A=0A=0AIs above line is indication of so=
mething that need to be fixed in the system?? how can I resolve this?=0A=0A=
=0A=0Abest,=0A=0A/Shahab=0A=0A=0A
--1871113123-1297044192-1429553271=:90922
Content-Type: text/html; charset=iso-8859-1
Content-Transfer-Encoding: quoted-printable

<table cellspacing=3D"0" cellpadding=3D"0" border=3D"0"><tr><td valign=3D"t=
op">I think this is just saying that young gen collection using Par new col=
lector took 248 seconds. This is quite normal with CMS unless it happens to=
o frequenltly several times in a sec. I think query time has more to do wit=
h read timeout in yaml. Try increasing it. If its a range query then please=
 increase range timeout in yaml.&nbsp;<div id=3D"yMail_cursorElementTracker=
_0.6470355694182217"><br></div><div id=3D"yMail_cursorElementTracker_0.6470=
355694182217">Thanks</div><div id=3D"yMail_cursorElementTracker_0.647035569=
4182217">Anuj Wadehra<br><br><p><a href=3D"https://overview.mail.yahoo.com/=
mobile/?.src=3DAndroid">Sent from Yahoo Mail on Android</a></p> <hr><table =
cellspacing=3D"0" cellpadding=3D"0" border=3D"0"> <tbody> <tr> <td valign=
=3D"top"> <div style=3D"font-family:Roboto, sans-serif;color:#7e7d80;"><b>F=
rom</b>:"shahab" &lt;shahab.mokari@gmail.com&gt;<br><b>Date</b>:Mon, 20 Apr=
, 2015 at 9:59
 pm<br><b>Subject</b>:Getting " ParNew GC in ... CMS Old Gen ... " in logs<=
br><br></div> <div dir=3D"ltr">Hi,<div><br></div><div>I am keep getting fol=
lowing line in the cassandra logs, apparently something related to Garbage =
Collection. And I guess this is one of the signs why i do not get any respo=
nse (i get time-out) when I query large volume of data ?!!!&nbsp;</div><div=
><br></div><div>&nbsp;ParNew GC in 248ms.&nbsp; CMS Old Gen: 453244264 -&gt=
; 570471312; Par Eden Space: 167712624 -&gt; 0; Par Survivor Space: 0 -&gt;=
 20970080<br></div><div><br></div><div>Is above line is indication of somet=
hing that need to be fixed in the system?? how can I resolve this?</div><di=
v><br></div><div><br></div><div>best,</div><div>/Shahab</div><div><br></div=
></div></td>  </tr>   </tbody>   </table></div></td></tr></table>
--1871113123-1297044192-1429553271=:90922--