feat: add extension to support DataFrame::checkpoint()#1993
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DataFrame::checkpoint()DataFrame::checkpoint()
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Which issue does this PR close?
Closes #1937 .
Rationale for this change
Before this change, there was no
checkpoint()method for the DataFrame in Ballista (where we break lineage of the plan and store intermediate results to specified location)What changes are included in this PR?
Introducing new
DataFrameExttrait in the client, also introducingcheckpoint()there.A new entry to the
BallistaConfigwas added as well. When trying to callcheckpoint()without the config entry set user will get an error.Are there any user-facing changes?
New
checkpoint()method introduced.