Hello Everyone. I have a web application that connects to OrientDB 2.0.4. I
am seeing the following errors in my application when it sits idle for a
little while:
com.orientechnologies.common.log.OLogManager log
WARNING: Caught I/O errors from Not connected (local socket=?), trying to
reconnect (error: java.io.IOException: Channel is closed)
Mar 08, 2015 3:45:46 PM com.orientechnologies.common.log.OLogManager log
WARNING: Connection re-acquired transparently after 272ms and 1 retries to
server 'server-name/database-name': no errors will be thrown at application
level
This in turn severely affects the performance of the application even
though it is able to reconnect to the OrientDB cluster. The error keeps
appearing in the client application log until I restart the client
application. I am hosting in Azure VMs using CentOS 7 and the Tinkerpop
Blueprints library. I am using OrientGraphFactory on the client side with a
min pool size of 100 and max pool size of 200. I have tried this with a min
pool size of 1 and max pool size of 10 as well with the same result. Here
is my Tinkerpop maven dependencies for the client application:
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<java.version>1.8</java.version>
<blueprints.version>2.6.0</blueprints.version>
<orientdb.version>2.0.4</orientdb.version>
</properties>
<dependency>
<groupId>com.tinkerpop.rexster</groupId>
<artifactId>rexster-core</artifactId>
<version>${blueprints.version}</version>
<scope>provided</scope>
<exclusions>
<exclusion>
<artifactId>commons-logging</artifactId>
<groupId>commons-logging</groupId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>com.orientechnologies</groupId>
<artifactId>orientdb-core</artifactId>
<version>${orientdb.version}</version>
</dependency>
<dependency>
<groupId>com.orientechnologies</groupId>
<artifactId>orientdb-graphdb</artifactId>
<version>${orientdb.version}</version>
</dependency>
<dependency>
<groupId>com.orientechnologies</groupId>
<artifactId>orientdb-enterprise</artifactId>
<version>${orientdb.version}</version>
</dependency>
<dependency>
<groupId>com.orientechnologies</groupId>
<artifactId>orientdb-lucene</artifactId>
<version>${orientdb.version}</version>
</dependency>
<dependency>
<groupId>com.orientechnologies</groupId>
<artifactId>orientdb-server</artifactId>
<version>${orientdb.version}</version>
</dependency>
<dependency>
<groupId>com.orientechnologies</groupId>
<artifactId>orientdb-tools</artifactId>
<version>${orientdb.version}</version>
<exclusions>
<exclusion>
<groupId>com.orientechnologies</groupId>
<artifactId>orientdb-object</artifactId>
</exclusion>
</exclusions>
</dependency>
Is this a bug with Tinkerpop Blueprints? Please advise. Thank you.
Amir.
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