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Key Default Type Description
orc.column.encoding.direct
(none) Integer Comma-separated list of fields for which dictionary encoding is to be skipped in orc.
orc.compress
"lz4" String Define the compression codec for ORC file, if a higher compression ratio is required, it is recommended to configure it as 'zstd', and you can configure: orc.compression.zstd.level
orc.compression.zstd.level
3 Integer Define the compression level to use with ZStandard codec while writing data. The valid range is 1~22.
orc.dictionary.key.threshold
0.8 Double If the number of distinct keys in a dictionary is greater than this fraction of the total number of non-null rows, turn off dictionary encoding in orc. Use 0 to always disable dictionary encoding. Use 1 to always use dictionary encoding.
orc.write.batch-size
1024 Integer write batch size for orc.