[Data] Add retry for _sample_fragment during ParquetDatasource._estimate_files_encoding_ratio()
#42759
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Signed-off-by: Scott Lee <sjl@anyscale.com>
raulchen
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Jan 27, 2024
Signed-off-by: Scott Lee <sjl@anyscale.com>
scottjlee
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ericl,
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c21,
amogkam,
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Zandew
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c21
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Jan 27, 2024
| sample_fragment.options( | ||
| scheduling_strategy=scheduling, | ||
| # Retry in case of transient errors during sampling. | ||
| retry_exceptions=[OSError], |
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Let's extract this as a variable similar to RETRY_EXCEPTIONS_FOR_META_FETCH_TASK, so we can tune later.
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discussed with @scottjlee , we'll make this configurable in DataContext. Since other retry errors are not configurable either. we'll use a follow-up PR to update all.
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I feel it's okay to not put into DataContext. I don't think they are user-facing, and mostly it only should be tuned by ourselves, when debugging user job. Let's only add config to DataContext if they are expected to be set by users.
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But agreed to merge this PR ASAP to unblock users.
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Jan 27, 2024
…timate_files_encoding_ratio()` (ray-project#42759)
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Why are these changes needed?
Sometimes, there can be transient errors during the fragment sampling phase of
read_parquet(), when Ray Data estimates the file encoding ratio prior to execution. We include this fragment sampling phase into a retry loop so that we automatically retry upon failure.Related issue number
Checks
git commit -s) in this PR.scripts/format.shto lint the changes in this PR.method in Tune, I've added it in
doc/source/tune/api/under thecorresponding
.rstfile.