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From "Pallavi Rao (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (FALCON-1716) API fails with CommunicationsException when mysql interaction time is longer than 53,434,939 milliseconds
Date Fri, 22 Jan 2016 10:52:39 GMT

    [ https://issues.apache.org/jira/browse/FALCON-1716?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15112294#comment-15112294
] 

Pallavi Rao commented on FALCON-1716:
-------------------------------------

+1. Will commit in a bit, unless there are any comments.

> API fails with CommunicationsException when mysql interaction time is longer than 53,434,939
milliseconds
> ---------------------------------------------------------------------------------------------------------
>
>                 Key: FALCON-1716
>                 URL: https://issues.apache.org/jira/browse/FALCON-1716
>             Project: Falcon
>          Issue Type: Bug
>          Components: scheduler
>    Affects Versions: 0.9
>            Reporter: Pragya Mittal
>            Assignee: pavan kumar kolamuri
>         Attachments: FALCON-1716-v1.patch, FALCON-1716.patch, jdbc-timedout.log
>
>
> If mysql is not interacted for less than 53,434,939 milliseconds, the query fails with
CommunicationsException for first few attempts after which connection is set. We should configure
communication window for the same. Error is :
> {noformat}
> 2015-12-30 06:54:47,294 ERROR - [357665612@qtp-1816147548-10 - 8ebf22cf-4f82-4280-a248-fa3ca6048042:dataqa:GET//instance/params/process/ProcessInstanceStatusTest-agregator-coord16-50a6b241]
~ Failed to display params of an instance (AbstractInstanceManager:553)
> <openjpa-2.4.0-r422266:1674604 fatal general error> org.apache.openjpa.persistence.PersistenceException:
The last packet successfully received from the server was 53,434,939 milliseconds ago.  The
last packet sent successfully to the server was 53,434,939 milliseconds ago. is longer than
the server configured value of 'wait_timeout'. You should consider either expiring and/or
testing connection validity before use in your application, increasing the server configured
values for client timeouts, or using the Connector/J connection property 'autoReconnect=true'
to avoid this problem.
>         at org.apache.openjpa.jdbc.sql.DBDictionary.narrow(DBDictionary.java:5001)
>         at org.apache.openjpa.jdbc.sql.DBDictionary.newStoreException(DBDictionary.java:4961)
>         at org.apache.openjpa.jdbc.sql.SQLExceptions.getStore(SQLExceptions.java:133)
>         at org.apache.openjpa.jdbc.sql.SQLExceptions.getStore(SQLExceptions.java:107)
>         at org.apache.openjpa.jdbc.sql.SQLExceptions.getStore(SQLExceptions.java:59)
>         at org.apache.openjpa.jdbc.kernel.JDBCStoreManager.connect(JDBCStoreManager.java:967)
>         at org.apache.openjpa.jdbc.kernel.JDBCStoreManager.getConnection(JDBCStoreManager.java:241)
>         at org.apache.openjpa.jdbc.kernel.PreparedSQLStoreQuery$PreparedSQLExecutor.executeQuery(PreparedSQLStoreQuery.java:104)
>         at org.apache.openjpa.kernel.QueryImpl.execute(QueryImpl.java:1004)
>         at org.apache.openjpa.kernel.QueryImpl.execute(QueryImpl.java:862)
>         at org.apache.openjpa.kernel.QueryImpl.execute(QueryImpl.java:793)
>         at org.apache.openjpa.kernel.DelegatingQuery.execute(DelegatingQuery.java:541)
>         at org.apache.openjpa.persistence.QueryImpl.execute(QueryImpl.java:274)
>         at org.apache.openjpa.persistence.QueryImpl.getResultList(QueryImpl.java:290)
>         at org.apache.falcon.state.store.jdbc.JDBCStateStore.getEntityByKey(JDBCStateStore.java:95)
>         at org.apache.falcon.state.store.jdbc.JDBCStateStore.entityExists(JDBCStateStore.java:105)
>         at org.apache.falcon.workflow.engine.FalconWorkflowEngine.isActive(FalconWorkflowEngine.java:98)
>         at org.apache.falcon.workflow.WorkflowEngineFactory.getWorkflowEngine(WorkflowEngineFactory.java:54)
>         at org.apache.falcon.resource.AbstractEntityManager.getWorkflowEngine(AbstractEntityManager.java:1132)
>         at org.apache.falcon.resource.AbstractInstanceManager.getInstanceParams(AbstractInstanceManager.java:550)
>         at org.apache.falcon.resource.InstanceManager.getInstanceParams(InstanceManager.java:178)
>         at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>         at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
>         at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
>         at java.lang.reflect.Method.invoke(Method.java:497)
>         at com.sun.jersey.spi.container.JavaMethodInvokerFactory$1.invoke(JavaMethodInvokerFactory.java:60)
>         at com.sun.jersey.server.impl.model.method.dispatch.AbstractResourceMethodDispatchProvider$TypeOutInvoker._dispatch(AbstractResourceMethodDispatchProvider.java:185)
>         at com.sun.jersey.server.impl.model.method.dispatch.ResourceJavaMethodDispatcher.dispatch(ResourceJavaMethodDispatcher.java:75)
> {noformat}



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