这个是问题：请教一下大神看看。很需要帮忙。
2020/04/02 02:05:23 - 字段选择.0 - 行号 2170000
2020/04/02 02:06:02 - 数据源.0 - linenr 2180000
2020/04/02 02:10:40 - 表输出.0 - ERROR (version 6.1.0.1-196, build 1 from 2016-04-07 12.08.49 by buildguy) : Because of an error, this step can't continue:
2020/04/02 02:10:40 - 表输出.0 - ERROR (version 6.1.0.1-196, build 1 from 2016-04-07 12.08.49 by buildguy) : org.pentaho.di.core.exception.KettleDatabaseException:
2020/04/02 02:10:40 - 表输出.0 - Error performing rollback on connection
2020/04/02 02:10:40 - 表输出.0 - Communications link failure during rollback(). Transaction resolution unknown.
2020/04/02 02:10:40 - 表输出.0 -
2020/04/02 02:10:40 - 表输出.0 - at org.pentaho.di.core.database.Database.rollback(Database.java:854)
2020/04/02 02:10:40 - 表输出.0 - at org.pentaho.di.core.database.Database.rollback(Database.java:832)
2020/04/02 02:10:40 - 表输出.0 - at org.pentaho.di.trans.steps.tableoutput.TableOutput.writeToTable(TableOutput.java:332)
2020/04/02 02:10:40 - 表输出.0 - at org.pentaho.di.trans.steps.tableoutput.TableOutput.processRow(TableOutput.java:118)
2020/04/02 02:10:40 - 表输出.0 - at org.pentaho.di.trans.step.RunThread.run(RunThread.java:62)
2020/04/02 02:10:40 - 表输出.0 - at java.lang.Thread.run(Thread.java:745)
2020/04/02 02:10:40 - 表输出.0 - Caused by: com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException: Communications link failure during rollback(). Transaction resolution unknown.
2020/04/02 02:10:40 - 表输出.0 - at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
2020/04/02 02:10:40 - 表输出.0 - at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)
2020/04/02 02:10:40 - 表输出.0 - at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
2020/04/02 02:10:40 - 表输出.0 - at java.lang.reflect.Constructor.newInstance(Constructor.java:526)
2020/04/02 02:10:40 - 表输出.0 - at com.mysql.jdbc.Util.handleNewInstance(Util.java:425)
2020/04/02 02:10:40 - 表输出.0 - at com.mysql.jdbc.Util.getInstance(Util.java:408)
2020/04/02 02:10:40 - 表输出.0 - at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:918)
2020/04/02 02:10:40 - 表输出.0 - at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:897)
2020/04/02 02:10:40 - 表输出.0 - at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:886)
2020/04/02 02:10:40 - 表输出.0 - at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:860)
2020/04/02 02:10:40 - 表输出.0 - at com.mysql.jdbc.ConnectionImpl.rollback(ConnectionImpl.java:4584)
2020/04/02 02:10:40 - 表输出.0 - at org.pentaho.di.core.database.Database.rollback(Database.java:845)
2020/04/02 02:10:40 - 表输出.0 - ... 5 more
2020/04/02 02:10:40 - t_sdrs_xscj - ERROR (version 6.1.0.1-196, build 1 from 2016-04-07 12.08.49 by buildguy) : Something went wrong while trying to stop the transformation: org.pentaho.di.core.exception.KettleDatabaseException:
2020/04/02 02:10:40 - t_sdrs_xscj - Unable to get database metadata from this database connection
2020/04/02 02:10:40 - t_sdrs_xscj - at java.lang.Thread.run (Thread.java:745)
2020/04/02 02:10:40 - t_sdrs_xscj - at org.pentaho.di.trans.step.RunThread.run (RunThread.java:62)
2020/04/02 02:10:40 - t_sdrs_xscj - at org.pentaho.di.trans.steps.tableoutput.TableOutput.processRow (TableOutput.java:132)
2020/04/02 02:10:40 - t_sdrs_xscj - at org.pentaho.di.trans.step.BaseStep.stopAll (BaseStep.java:2863)
2020/04/02 02:10:40 - t_sdrs_xscj - at org.pentaho.di.trans.Trans.stopAll (Trans.java:1861)
2020/04/02 02:10:40 - t_sdrs_xscj - at org.pentaho.di.trans.steps.sql.ExecSQL.stopRunning (ExecSQL.java:268)
2020/04/02 02:10:40 - t_sdrs_xscj - at org.pentaho.di.core.database.Database.cancelQuery (Database.java:678)
2020/04/02 02:10:40 - t_sdrs_xscj - at org.pentaho.di.core.database.Database.getDatabaseMetaData (Database.java:2745)
2020/04/02 02:10:40 - t_sdrs_xscj - ERROR (version 6.1.0.1-196, build 1 from 2016-04-07 12.08.49 by buildguy) : org.pentaho.di.core.exception.KettleDatabaseException:
2020/04/02 02:10:40 - t_sdrs_xscj - Unable to get database metadata from this database connection
2020/04/02 02:10:40 - t_sdrs_xscj - at java.lang.Thread.run (Thread.java:745)
2020/04/02 02:10:40 - t_sdrs_xscj - at org.pentaho.di.trans.step.RunThread.run (RunThread.java:62)
2020/04/02 02:10:40 - t_sdrs_xscj - at org.pentaho.di.trans.steps.tableoutput.TableOutput.processRow (TableOutput.java:132)
2020/04/02 02:10:40 - t_sdrs_xscj - at org.pentaho.di.trans.step.BaseStep.stopAll (BaseStep.java:2863)
2020/04/02 02:10:40 - t_sdrs_xscj - at org.pentaho.di.trans.Trans.stopAll (Trans.java:1861)
2020/04/02 02:10:40 - t_sdrs_xscj - at org.pentaho.di.trans.steps.sql.ExecSQL.stopRunning (ExecSQL.java:268)
2020/04/02 02:10:40 - t_sdrs_xscj - at org.pentaho.di.core.database.Database.cancelQuery (Database.java:678)
2020/04/02 02:10:40 - t_sdrs_xscj - at org.pentaho.di.core.database.Database.getDatabaseMetaData (Database.java:2745)
2020/04/02 02:10:40 - t_sdrs_xscj -
2020/04/02 02:10:40 - t_sdrs_xscj - at org.pentaho.di.core.database.Database.getDatabaseMetaData(Database.java:2747)
2020/04/02 02:10:40 - t_sdrs_xscj - at org.pentaho.di.core.database.Database.cancelQuery(Database.java:678)
2020/04/02 02:10:40 - t_sdrs_xscj - at org.pentaho.di.trans.steps.sql.ExecSQL.stopRunning(ExecSQL.java:268)
2020/04/02 02:10:40 - t_sdrs_xscj - at org.pentaho.di.trans.Trans.stopAll(Trans.java:1861)
2020/04/02 02:10:40 - t_sdrs_xscj - at org.pentaho.di.trans.step.BaseStep.stopAll(BaseStep.java:2863)
2020/04/02 02:10:40 - t_sdrs_xscj - at org.pentaho.di.trans.steps.tableoutput.TableOutput.processRow(TableOutput.java:132)
2020/04/02 02:10:40 - t_sdrs_xscj - at org.pentaho.di.trans.step.RunThread.run(RunThread.java:62)
2020/04/02 02:10:40 - t_sdrs_xscj - at java.lang.Thread.run(Thread.java:745)
2020/04/02 02:10:40 - t_sdrs_xscj - Caused by: java.lang.NullPointerException
2020/04/02 02:10:40 - t_sdrs_xscj - at org.pentaho.di.core.database.Database.getDatabaseMetaData(Database.java:2745)
2020/04/02 02:10:40 - t_sdrs_xscj - ... 7 more
