Socket exception : Has anyone encountered it? - CouchDB (document store)

[Madhu]

Hi,

I ran view Profile and View Friend requests workloads for no images and different number of threads. When I was halfway with ViewTopKResources, I have started getting Socket exceptions.  Any suggestion or solutions would be great help.

Exception:

java.net.SocketException: No buffer space available (maximum connections reached?): connect

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

        at java.net.PlainSocketImpl.doConnect(PlainSocketImpl.java:333)

        at java.net.PlainSocketImpl.connectToAddress(PlainSocketImpl.java:195)

        at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:182)

        at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:366)

        at java.net.Socket.connect(Socket.java:519)

        at org.apache.http.conn.scheme.PlainSocketFactory.connectSocket(PlainSocketFactory.java:119)

        at org.apache.http.impl.conn.DefaultClientConnectionOperator.openConnection(DefaultClientConnectionOperator.java:129)

        at org.apache.http.impl.conn.AbstractPoolEntry.open(AbstractPoolEntry.java:164)

        at org.apache.http.impl.conn.AbstractPooledConnAdapter.open(AbstractPooledConnAdapter.java:119)

        at org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:349)

        at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:555)

        at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:487)

        at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:465)

        at couchdbstore.CouchDBClient.viewProfile(Unknown Source)

        at com.yahoo.ycsb.DBWrapper.viewProfile(Unknown Source)

        at edu.usc.bg.workloads.CoreWorkload.doActionGetProfile(Unknown Source)

        at edu.usc.bg.workloads.CoreWorkload.doTransaction(Unknown Source)

        at com.yahoo.ycsb.ClientThread.run(Unknown Source)

Thanks,

Madhuvanthi

[Shahram Ghandeharizadeh]

Hi,
It appears that you are exhausting the available sockets.  Are you closing your HttpURLConnection connection at the end of each action?  It should look something like "myURLConnection.disconnect();"
Shahram.

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[Madhu]

Thank you,

I was not managing my connections well. I figured out ways to reduce the number of connection objects that I am using. It works fine now.

Madhu

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