[Building Sakai] Getting Too many open files in system error

[İrfan SÜRAL]

Hi 

 

Make sure your ulimit is activated. Therefore i recommend you to put this in
.bashrc file

 

$ nano /home/userxxx/.bashrc

 

ulimit -n 300000

Once I resolved my pprooblem in this way.

 

Irfan

 

From: sakai-dev-bounces at collab.sakaiproject.org
[mailto:sakai-dev-bounces at collab.sakaiproject.org] On Behalf Of Pravin G
Sent: Monday, January 5, 2015 8:17 AM
To: sakai-dev at collab.sakaiproject.org
Subject: [Building Sakai] Getting Too many open files in system error

 

Hi I am running sakai 2.9.1, I am getting 'Too many open files in system '
error many times.

 

I have tried to resolve this issue by modifying etc/security/limits.conf in
this way.

 

Added below lines in limits.conf " 

 

root soft nofile 65536

root hard nofile 65536

* soft nofile 65536

* hard nofile 65536

#ulimit -n 5000

 

And after system restart , I am able to see open files size as :65536 &
others as below.

 

core file size          (blocks, -c) unlimited

data seg size           (kbytes, -d) unlimited

scheduling priority             (-e) 0

file size               (blocks, -f) unlimited

pending signals                 (-i) 2062456

max locked memory       (kbytes, -l) 64

max memory size         (kbytes, -m) unlimited

open files                      (-n) 65536

pipe size            (512 bytes, -p) 8

POSIX message queues     (bytes, -q) 819200

real-time priority              (-r) 0

stack size              (kbytes, -s) 10240

cpu time               (seconds, -t) unlimited

max user processes              (-u) 2062456

virtual memory          (kbytes, -v) unlimited

file locks                      (-x) unlimited

 

But still I am getting errors as :

 

 

Caused by: java.io.FileNotFoundException:
/home/apache-tomcat-7.0.26/sakai/indexwork/index/_3_7.del (Too many open
files in system)

                at java.io.RandomAccessFile.open(Native Method)

                at
java.io.RandomAccessFile.<init>(RandomAccessFile.java:212)

                at
org.apache.lucene.store.SimpleFSDirectory$SimpleFSIndexInput$Descriptor.<ini
t>(SimpleFSDirectory.java:78)

                at
org.apache.lucene.store.SimpleFSDirectory$SimpleFSIndexInput.<init>(SimpleFS
Directory.java:108)

                at
org.apache.lucene.store.NIOFSDirectory$NIOFSIndexInput.<init>(NIOFSDirectory
.java:106)

                at
org.apache.lucene.store.NIOFSDirectory.openInput(NIOFSDirectory.java:82)

                at
org.apache.lucene.store.FSDirectory.openInput(FSDirectory.java:703)

                at
org.apache.lucene.util.BitVector.<init>(BitVector.java:221)

                at
org.apache.lucene.index.SegmentReader.loadDeletedDocs(SegmentReader.java:711
)

                at
org.apache.lucene.index.SegmentReader.get(SegmentReader.java:671)

                at
org.apache.lucene.index.SegmentReader.get(SegmentReader.java:628)

                at
org.apache.lucene.index.DirectoryReader.<init>(DirectoryReader.java:108)

                at
org.apache.lucene.index.DirectoryReader$1.doBody(DirectoryReader.java:80)

                at
org.apache.lucene.index.SegmentInfos$FindSegmentsFile.run(SegmentInfos.java:
683)

                at
org.apache.lucene.index.DirectoryReader.open(DirectoryReader.java:73)

                at
org.apache.lucene.index.IndexReader.open(IndexReader.java:476)

                at
org.apache.lucene.index.IndexReader.open(IndexReader.java:314)

                at
org.sakaiproject.search.journal.impl.JournaledFSIndexStorage.getIndexReaderI
nternal(JournaledFSIndexStorage.java:836)

                at
org.sakaiproject.search.journal.impl.JournaledFSIndexStorage.getIndexReader(
JournaledFSIndexStorage.java:745)

                at
org.sakaiproject.search.journal.impl.JournaledFSIndexStorage.getDeletionInde
xReader(JournaledFSIndexStorage.java:573)

                at
org.sakaiproject.search.journal.impl.JournaledFSIndexStorageUpdateTransactio
nListener.prepare(JournaledFSIndexStorageUpdateTransactionListener.java:124)

                ... 6 more             

 

 &  sometimes only this :

 

org.apache.tomcat.util.net.JIoEndpoint$Acceptor run SEVERE: Socket accept
failed

java.net.SocketException: Too many open files in system

                at java.net.PlainSocketImpl.socketAccept(Native Method)

                at java.net.PlainSocketImpl.accept(PlainSocketImpl.java:390)

                at java.net.ServerSocket.implAccept(ServerSocket.java:453)

                at java.net.ServerSocket.accept(ServerSocket.java:421)

                at
org.apache.tomcat.util.net.DefaultServerSocketFactory.acceptSocket(DefaultSe
rverSocketFactory.java:60)

                at
org.apache.tomcat.util.net.JIoEndpoint$Acceptor.run(JIoEndpoint.java:216)

                at java.lang.Thread.run(Thread.java:619)

 

 

Can anyone please guide me how can I resolve this error.

 

 

Thanks,

-

Pravin

 

 

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