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Fix writeToParquet and appendToParquet by switching engine to pyarrow… #84

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Merged
gadieid merged 1 commit into from
May 24, 2026
Merged

Fix writeToParquet and appendToParquet by switching engine to pyarrow… #84

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4 changes: 2 additions & 2 deletions argos/utils/parquetUtils.py
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Original file line number Diff line number Diff line change
Expand Up @@ -52,7 +52,7 @@ def appendToParquet(toBeAppended,additionalData,datetimeColumn='datetime'):


logger.debug(f"Loading old data file {toBeAppended}.")
dsk = dd.read_parquet(toBeAppended,engine="fastparquet")
dsk = dd.read_parquet(toBeAppended, engine="pyarrow")
united = dd.concat([dsk, newData.set_index(datetimeColumn)])
logger.debug(f"Check if the last partition is too large. ")
if united.partitions[-1].memory_usage().sum().compute()/1e6 > 100 or united.npartitions > 10:
Expand Down Expand Up @@ -112,5 +112,5 @@ def writeToParquet(parquetFile,data,datetimeColumn='datetime'):

#newData = newData.assign(datetimeString=newData[datetimeColumn].apply(lambda x: x.strftime("%d_%m_%Y"))).set_index(datetimeColumn)
dsk = dd.from_pandas(newData,npartitions=1).set_index(datetimeColumn)#.repartition(freq="1D")
dsk.to_parquet(parquetFile,engine="fastparquet")
dsk.to_parquet(parquetFile, engine="pyarrow")
return True
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