我们正在使用Jenkins插件对Android Java项目执行SonarQube分析，一切都在SonarQube 4.0版上运行良好但升级到5.0后我在控制台输出中看到以下消息：
16:07:06 16:07:05.662 INFO - Sensor ScmStatsSensor done: 576 ms
16:07:06 16:07:05.662 INFO - Sensor InitialOpenIssuesSensor...
16:07:06 16:07:05.948 INFO - Sensor InitialOpenIssuesSensor done: 286 ms
16:07:06 16:07:05.948 INFO - Sensor ProjectLinksSensor...
16:07:06 16:07:06.095 INFO - Sensor ProjectLinksSensor done: 147 ms
16:07:06 16:07:06.165 INFO - Sensor VersionEventsSensor...
16:07:07 16:07:06.447 INFO - Sensor VersionEventsSensor done: 282 ms
16:07:07 16:07:06.447 INFO - Sensor FileHashSensor...
16:07:07 16:07:06.465 INFO - Sensor FileHashSensor done: 18 ms
16:07:07 16:07:06.465 INFO - Sensor SCM Sensor...
16:07:07 16:07:06.485 INFO - SCM provider for this project is: git
16:07:07 16:07:06.485 INFO - Retrieve SCM blame information...
16:07:07 16:07:06.493 INFO - 175 files to be analyzed
16:07:10 16:07:09.710 INFO - Retrieve SCM blame information done: 3225 ms
16:07:10 16:07:09.710 INFO - Sensor SCM Sensor done: 3245 ms
16:07:10 16:07:09.710 INFO - Sensor CPD Sensor...
16:07:10 16:07:09.710 INFO - 175/175 files analyzed
16:07:10 16:07:09.711 INFO - JavaCpdEngine is used for java
16:07:10 16:07:09.722 INFO - Cross-project analysis disabled
16:07:11 16:07:10.365 INFO - Sensor CPD Sensor done: 655 ms
16:07:11 16:07:10.610 INFO - Execute decorators...
16:07:29 16:07:28.875 INFO - Store results in database
16:08:10 16:08:09.762 WARN - Unexpected exception on closing transaction. Cause: java.sql.SQLException: Already closed.
16:08:10 16:08:09.772 WARN - Unexpected exception on closing transaction. Cause: java.sql.SQLException: Already closed.
16:08:10 INFO: ------------------------------------------------------------------------
16:08:10 INFO: EXECUTION FAILURE
16:08:10 INFO: ------------------------------------------------------------------------
16:08:10 Total time: 5:08.498s
16:08:11 Final Memory: 89M/834M
16:08:11 INFO: ------------------------------------------------------------------------
16:08:11 ERROR: Error during Sonar runner execution
16:08:11 ERROR: Unable to execute Sonar
16:08:11 ERROR: Caused by: Unable to save file sources
16:08:11 ERROR: Caused by:
16:08:11 ### Error committing transaction. Cause: org.postgresql.util.PSQLException: An I/O error occurred while sending to the backend.
16:08:11 ### Cause: org.postgresql.util.PSQLException: An I/O error occurred while sending to the backend.
16:08:11 ERROR: Caused by: An I/O error occurred while sending to the backend.
16:08:11 ERROR:
16:08:11 ERROR: To see the full stack trace of the errors, re-run SonarQube Runner with the -e switch.
16:08:11 ERROR: Re-run SonarQube Runner using the -X switch to enable full debug logging.
16:08:11 Build step 'Invoke Standalone Sonar Analysis' marked build as failure
16:08:11 [locks-and-latches] Releasing all the locks
16:08:11 [locks-and-latches] All the locks released
16:08:11 Finished: FAILURE
在另一个Android Project作业日志输出上略有不同：
18:30:22.646 INFO - Load module settings
18:30:35.302 INFO - Language is forced to java
18:30:35.306 INFO - Loading rules...
18:30:37.220 INFO - Loading rules done: 1914 ms
18:30:37.253 INFO - Configure Maven plugins
18:30:37.616 INFO - No quality gate is configured.
18:30:38.168 INFO - Base dir: <base dir path>
18:30:38.168 INFO - Working dir:<working dir path>
18:30:38.169 INFO - Source paths: app/src/main
18:30:38.169 INFO - Source encoding: UTF-8, default locale: en_US
18:30:38.170 INFO - Index files
18:30:40.158 INFO - 525 files indexed
18:31:01.142 WARN - SQL Error: 0, SQLState: 08006
18:31:01.143 ERROR - An I/O error occurred while sending to the backend.
18:31:01.459 WARN - Unexpected exception on closing transaction. Cause: java.sql.SQLException: Already closed.
INFO: ------------------------------------------------------------------------
INFO: EXECUTION FAILURE
INFO: ------------------------------------------------------------------------
Total time: 1:40.863s
Final Memory: 51M/648M
INFO: ------------------------------------------------------------------------
ERROR: Error during Sonar runner execution
ERROR: Unable to execute Sonar
ERROR: Caused by: org.hibernate.exception.JDBCConnectionException: could not execute query
ERROR: Caused by: could not execute query
ERROR: Caused by: An I/O error occurred while sending to the backend.
ERROR:
ERROR: To see the full stack trace of the errors, re-run SonarQube Runner with the -e switch.
ERROR: Re-run SonarQube Runner using the -X switch to enable full debug logging.
Build step 'Invoke Standalone Sonar Analysis' marked build as failure
An attempt to send an e-mail to empty list of recipients, ignored.
Finished: FAILURE
我们在SonarQube服务器上使用PostgreSQL 9.3.6。 如何解决这个问题的任何建议将不胜感激！