[SPARK-29813][MLLIB] Missing persist in mllib.PrefixSpan.findFrequentItems() #26452
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amanomer
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amanomer
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Can one of the admins verify this patch? |
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What changes were proposed in this pull request?
Use
persiston RDD which is used for more than one action.Why are the changes needed?
There are three actions:
reduceByKey,sortBy, andcollect. But RDDdatais not persisted, which will cause re-computation.Does this PR introduce any user-facing change?
No
How was this patch tested?
Tested manually.