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DeleteLogicalFiles in a PROJECT or APPLY requires NOTHOR
Thorslaves Thor Worker nodes are prevented from having direct access to DALI which means that most FileServices calls cannot be used in a PROJECT/APPLY if they are executed on slavesa worker. To avoid getting an error, wrap the PROJECT/APPLY with a NOTHOR to force the expressions/action to be executed in the ECL Agent context. For example instead of using the following code:
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https://track.hpccsystems.com/browse/HPCC-9729
The following note relates to HPCC Systems 4.0.2 only:
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https://track.hpccsystems.com/browse/HPCC-10010