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From SRK <>
Subject ReduceByKeyAndWindow checkpoint recovery issues in Spark Streaming
Date Wed, 23 Aug 2017 19:26:02 GMT

ReduceByKeyAndWindow checkpoint recovery has issues when trying to recover
for the second time. Basically it is losing the reduced value of the
previous window but is present in the old values that needs to be inverse
reduced resulting in the following error. Does anyone has any idea as to why
it does not recover properly the second time?

Neither previous window has value for key, nor new values found. Are you
sure your key class hashes consistently?

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