java.util.ConcurrentModificationException: This exception has no message.

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via javacodegeeks.com by Unknown author

Causes : The Collection is internally modified, while a thread is iterating over it. OR after the creation of an iterator, the Collection is internally modified by any method other than the iterator’s own methods for removal and addition.

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via oracle.com by Unknown author

In order to avoid more than one threads accessing or modifying the same object, you can synchronize them over the object, in order to allow only one thread to manipulate it over the time

Solutions on the web

via Pentaho BI Platform Tracking by Pavel Utko, 1 year ago
This exception has no message.
via Pentaho BI Platform Tracking by Pavel Utko, 1 year ago
This exception has no message.
via GitHub by AfterWind
, 1 year ago
This exception has no message.
java.util.ConcurrentModificationException:
at java.util.ArrayList$Itr.checkForComodification(ArrayList.java:901)
at java.util.ArrayList$Itr.next(ArrayList.java:851)
at org.pentaho.di.core.row.RowMeta.cloneRow(RowMeta.java:403)
at org.pentaho.di.core.row.RowMeta.cloneRow(RowMeta.java:384)
at com.google.corp.corpdata.pantheon.kettle.trans.steps.selectvalues.SelectValues.getRow(SelectValues.java:28)
at org.pentaho.di.trans.steps.selectvalues.SelectValues.processRow(SelectValues.java:337)
at org.pentaho.di.trans.step.RunThread.run(RunThread.java:62)
at java.lang.Thread.run(Thread.java:745)

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