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Is The Hdfs Block Size Reduced To Achieve Faster Query Results? |
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Answer» No. IMPALA does not make any changes to the HDFS or HBASE data sets. The default Parquet block size is relatively large (256 MB in Impala 2.0 and later; 1 GB in earlier releases). You can control the block size when creating Parquet files using the PARQUET_FILE_SIZE QUERY option. No. Impala does not make any changes to the HDFS or HBase data sets. The default Parquet block size is relatively large (256 MB in Impala 2.0 and later; 1 GB in earlier releases). You can control the block size when creating Parquet files using the PARQUET_FILE_SIZE query option. |
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