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https://issues.apache.org/jira/browse/SUBMARINE-446?focusedWorklogId=410011&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-410011
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ASF GitHub Bot logged work on SUBMARINE-446:
--------------------------------------------

                Author: ASF GitHub Bot
            Created on: 26/Mar/20 01:30
            Start Date: 26/Mar/20 01:30
    Worklog Time Spent: 10m 
      Work Description: asfgit commented on pull request #247: SUBMARINE-446. 
Submarine server does not reconnect automatically to MySQL
URL: https://github.com/apache/submarine/pull/247
 
 
   
 
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Issue Time Tracking
-------------------

    Worklog Id:     (was: 410011)
    Time Spent: 20m  (was: 10m)

> Submarine server does not reconnect automatically to MySQL
> ----------------------------------------------------------
>
>                 Key: SUBMARINE-446
>                 URL: https://issues.apache.org/jira/browse/SUBMARINE-446
>             Project: Apache Submarine
>          Issue Type: Bug
>            Reporter: Wei-Chiu Chuang
>            Assignee: Neo Chien
>            Priority: Major
>              Labels: pull-request-available
>          Time Spent: 20m
>  Remaining Estimate: 0h
>
> After a few hours, the Submarine server emits the following error message in 
> the log:
> {noformat}
> Opening JDBC Connection
> Checked out connection 49237116 from pool.
> Setting autocommit to false on JDBC Connection 
> [com.mysql.jdbc.JDBC4Connection@2ef4c7c]
> Resetting autocommit to true on JDBC Connection 
> [com.mysql.jdbc.JDBC4Connection@2ef4c7c]
> Closing JDBC Connection [com.mysql.jdbc.JDBC4Connection@2ef4c7c]
> Returned connection 49237116 to pool.
> [ERROR] 2020-03-20 22:26:17,724 
> method:org.apache.submarine.server.workbench.rest.LoginRestApi.login(LoginRestApi.java:65)
> ### Error querying database.  Cause: 
> org.apache.ibatis.transaction.TransactionException: Error configuring 
> AutoCommit.  Your driver may not support getAutoCommit() or setAutoCommit(). 
> Requested setting: false.  Cause: 
> com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: The last packet 
> successfully received from the server was 163,618,589 milliseconds ago.  The 
> last packet sent successfully to the server was 163,618,589 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.
> ### The error may exist in 
> org/apache/submarine/database/mappers/SysUserMapper.xml
> ### The error may involve 
> org.apache.submarine.server.workbench.database.mappers.SysUserMapper.login
> ### The error occurred while executing a query
> ### Cause: org.apache.ibatis.transaction.TransactionException: Error 
> configuring AutoCommit.  Your driver may not support getAutoCommit() or 
> setAutoCommit(). Requested setting: false.  Cause: 
> com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: The last packet 
> successfully received from the server was 163,618,589 milliseconds ago.  The 
> last packet sent successfully to the server was 163,618,589 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.
> org.apache.ibatis.exceptions.PersistenceException:
> ### Error querying database.  Cause: 
> org.apache.ibatis.transaction.TransactionException: Error configuring 
> AutoCommit.  Your driver may not support getAutoCommit() or setAutoCommit(). 
> Requested setting: false.  Cause: 
> com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: The last packet 
> successfully received from the server was 163,618,589 milliseconds ago.  The 
> last packet sent successfully to the server was 163,618,589 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.
> ### The error may exist in 
> org/apache/submarine/database/mappers/SysUserMapper.xml
> ### The error may involve 
> org.apache.submarine.server.workbench.database.mappers.SysUserMapper.login
> ### The error occurred while executing a query
> ### Cause: org.apache.ibatis.transaction.TransactionException: Error 
> configuring AutoCommit.  Your driver may not support getAutoCommit() or 
> setAutoCommit(). Requested setting: false.  Cause: 
> com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: The last packet 
> successfully received from the server was 163,618,589 milliseconds ago.  The 
> last packet sent successfully to the server was 163,618,589 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.ibatis.exceptions.ExceptionFactory.wrapException(ExceptionFactory.java:26)
>         at 
> org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:111)
>         at 
> org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:102)
>         at 
> org.apache.ibatis.session.defaults.DefaultSqlSession.selectOne(DefaultSqlSession.java:66)
>         at 
> org.apache.ibatis.binding.MapperMethod.execute(MapperMethod.java:68)
>         at org.apache.ibatis.binding.MapperProxy.invoke(MapperProxy.java:52)
>         at com.sun.proxy.$Proxy42.login(Unknown Source)
>         at 
> org.apache.submarine.server.workbench.rest.LoginRestApi.login(LoginRestApi.java:61)
>         at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> .....
> Caused by: org.apache.ibatis.transaction.TransactionException: Error 
> configuring AutoCommit.  Your driver may not support getAutoCommit() or 
> setAutoCo
> mmit(). Requested setting: false.  Cause: 
> com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: The last packet 
> successfully received from the serv
> er was 163,618,589 milliseconds ago.  The last packet sent successfully to 
> the server was 163,618,589 milliseconds ago. is longer than the server conf
> igured 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.ibatis.transaction.jdbc.JdbcTransaction.setDesiredAutoCommit(JdbcTransaction.java:105)
>         at 
> org.apache.ibatis.transaction.jdbc.JdbcTransaction.openConnection(JdbcTransaction.java:138)
>         at 
> org.apache.ibatis.transaction.jdbc.JdbcTransaction.getConnection(JdbcTransaction.java:61)
>         at 
> org.apache.ibatis.executor.BaseExecutor.getConnection(BaseExecutor.java:279)
>         at 
> org.apache.ibatis.executor.SimpleExecutor.prepareStatement(SimpleExecutor.java:72)
>         at 
> org.apache.ibatis.executor.SimpleExecutor.doQuery(SimpleExecutor.java:59)
>         at 
> org.apache.ibatis.executor.BaseExecutor.queryFromDatabase(BaseExecutor.java:267)
>         at 
> org.apache.ibatis.executor.BaseExecutor.query(BaseExecutor.java:137)
>         at 
> org.apache.ibatis.executor.CachingExecutor.query(CachingExecutor.java:96)
>         at 
> com.github.pagehelper.PageInterceptor.intercept(PageInterceptor.java:108)
>         at org.apache.ibatis.plugin.Plugin.invoke(Plugin.java:60)
>         at com.sun.proxy.$Proxy41.query(Unknown Source)
>         at 
> org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:108)
>         ... 58 more
> Caused by: com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: The last 
> packet successfully received from the server was 163,618,589 milliseconds 
> ago.  The last packet sent successfully to the server was 163,618,589 
> 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 sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native 
> Method)
>         at 
> sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
>         at 
> sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
>         at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
> ...
> Caused by: java.net.SocketException: Broken pipe (Write failed)
>         at java.net.SocketOutputStream.socketWrite0(Native Method)
>         at 
> java.net.SocketOutputStream.socketWrite(SocketOutputStream.java:111)
>         at java.net.SocketOutputStream.write(SocketOutputStream.java:155)
>         at 
> java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:82)
>         at java.io.BufferedOutputStream.flush(BufferedOutputStream.java:140)
>         at com.mysql.jdbc.MysqlIO.send(MysqlIO.java:3721)
>         ... 80 more
> {noformat}
> The default JDBC URL has the autoReconnect=true option. Not sure why it still 
> doesn't reconnect automatically.



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