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Date: Thu, 20 Aug 2015 16:28:48 +0100
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Subject: Fwd: JSVC grows until it is killed by the kernel (restarting
 Cassandra)
From: Florin Razvan Gheorghe <razvan.florin.gheorghe@gmail.com>
To: user@cassandra.apache.org
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Hi all,

I am trying to troubleshoot a case in which the jsvc process (in which
Cassandra is running) uses more and more memory until the OS kills the
process and so Cassandra is restarted.

OS: Ubuntu 12.04
Java: Oracle JDK 8u45
Cassandra: 1.2.19 (datastax)

*Note: We are currently tied to Cassandra 1.2.x due to our implementation
of our services...

Systems:
CPU 4 * 2.3 GHz
Memory 8 GB

Cassandra: out-of-the box parameters, 4 DC with 3 nodes in each DC. 4
keyspaces created by us (one covers all the nodes, 3 of them cover DC1 and
another DC)

Problem: The jsvc memory grows larger and larger over the time and we need
to restart the service every 5-7 days.

Tried the following configuration changes in cassandra:
- memtable_total_space_in_mb and commitlog_total_space_in_mb set to 1024
 - key_cache_size_in_mb: 0

- MAX_HEAP_SIZE="3G" and HEAP_NEWSIZE="200M"
- disk_access_mode: standard

Please let me know your approach in troubleshooting this.

Thank you for your time and patience,
Florin

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<div dir=3D"ltr"><div class=3D"gmail_quote"><div dir=3D"ltr">Hi all,<div><b=
r></div><div>I am trying to troubleshoot a case in which the jsvc process (=
in which Cassandra is running) uses more and more memory until the OS kills=
 the process and so Cassandra is restarted.</div><div><br></div><div>OS: Ub=
untu 12.04</div><div>Java: Oracle JDK 8u45</div><div>Cassandra: 1.2.19 (dat=
astax)=C2=A0</div><div><br></div><div>*Note: We are currently tied to Cassa=
ndra 1.2.x due to our implementation of our services...</div><div><br></div=
><div>Systems:=C2=A0</div><div>CPU 4 * 2.3 GHz</div><div>Memory 8 GB</div><=
div><br></div><div>Cassandra: out-of-the box parameters, 4 DC with 3 nodes =
in each DC. 4 keyspaces created by us (one covers all the nodes, 3 of them =
cover DC1 and another DC)</div><div><br></div><div>Problem: The jsvc memory=
 grows larger and larger over the time and we need to restart the service e=
very 5-7 days.</div><div><br></div><div>Tried the following configuration c=
hanges in cassandra:</div><div>-=C2=A0<span style=3D"color:rgb(31,73,125)">=
memtable_total_space_in_mb and=C2=A0</span><span style=3D"color:rgb(31,73,1=
25)">commitlog_total_space_in_mb set to=C2=A0</span><span style=3D"color:rg=
b(31,73,125);font-family:Calibri,sans-serif;font-size:11pt">1024</span></di=
v><span style=3D"font-size:11.0pt;font-family:&quot;Calibri&quot;,sans-seri=
f;color:#1f497d">=C2=A0-=C2=A0</span><span style=3D"color:rgb(31,73,125)">k=
ey_cache_size_in_mb: 0</span><p class=3D"MsoNormal"><span style=3D"color:#1=
f497d"></span></p><div><span style=3D"color:rgb(31,73,125)">-=C2=A0</span><=
span style=3D"color:rgb(31,73,125)">MAX_HEAP_SIZE=3D&quot;3G&quot; and=C2=
=A0</span><span style=3D"color:rgb(31,73,125)">HEAP_NEWSIZE=3D&quot;200M&qu=
ot; =C2=A0</span></div><div><span style=3D"color:rgb(31,73,125)">-=C2=A0</s=
pan><font color=3D"#1f497d">disk_access_mode: standard</font></div><div><fo=
nt color=3D"#1f497d"><br></font></div><div><font color=3D"#1f497d">Please l=
et me know your approach in troubleshooting this.</font></div><div><font co=
lor=3D"#1f497d"><br></font></div><div><font color=3D"#1f497d">Thank you for=
 your time and patience,</font></div><div><font color=3D"#1f497d">Florin</f=
ont></div></div>
</div><br></div>

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