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java.util.ConcurrentModificationException at java.util.Hashtable$Enumerator.next(Hashtable.java:1167) at java.util.concurrent.ConcurrentHashMap.putAll(ConcurrentHashMap.java:1161) at org.pentaho.di.trans.Trans.getResult(Trans.java:2592) at org.pentaho.di.trans.steps.metainject.MetaInject.copyResult(MetaInject.java:326) at org.pentaho.di.trans.steps.metainject.MetaInject.processRow(MetaInject.java:306) at org.pentaho.di.trans.step.RunThread.run(RunThread.java:62) at java.lang.Thread.run(Thread.java:745)