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com.nvidia.spark.rapids

GpuParquetUtils

object GpuParquetUtils extends Logging

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  5. def clipBlocksToSchema(readSchema: MessageType, blocks: List[BlockMetaData], isCaseSensitive: Boolean): Seq[BlockMetaData]

    Trim block metadata to contain only the column chunks that occur in the specified schema.

    Trim block metadata to contain only the column chunks that occur in the specified schema. The column chunks that are returned are preserved verbatim (i.e.: file offsets remain unchanged).

    readSchema

    the schema to preserve

    blocks

    the block metadata from the original Parquet file

    isCaseSensitive

    indicate if it is case sensitive

    returns

    the updated block metadata with undesired column chunks removed

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  28. def newBlockMeta(rowCount: Long, columns: Seq[ColumnChunkMetaData]): BlockMetaData

    Build a new BlockMetaData

    Build a new BlockMetaData

    rowCount

    the number of rows in this block

    columns

    the new column chunks to reference in the new BlockMetaData

    returns

    the new BlockMetaData

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