bad_parquet_data.parquet: Generated with parquet-mr 1.2.5 Contains 3 single-column rows: "parquet" "is" "fun" bad_compressed_dict_page_size.parquet: Generated by hacking Impala's Parquet writer. Contains a single string column 'col' with one row ("a"). The compressed_page_size field in dict page header is modifed to 0 to test if it is correctly handled. bad_rle_literal_count.parquet: Generated by hacking Impala's Parquet writer. Contains a single bigint column 'c' with the values 1, 3, 7 stored in a single data chunk as dictionary plain. The RLE encoded dictionary indexes are all literals (and not repeated), but the literal count is incorrectly 0 in the file to test that such data corruption is proprly handled. bad_rle_repeat_count.parquet: Generated by hacking Impala's Parquet writer. Contains a single bigint column 'c' with the value 7 repeated 7 times stored in a single data chunk as dictionary plain. The RLE encoded dictionary indexes are a single repeated run (and not literals), but the repeat count is incorrectly 0 in the file to test that such data corruption is proprly handled. zero_rows_zero_row_groups.parquet: Generated by hacking Impala's Parquet writer. The file metadata indicates zero rows and no row groups. zero_rows_one_row_group.parquet: Generated by hacking Impala's Parquet writer. The file metadata indicates zero rows but one row group. huge_num_rows.parquet Generated by hacking Impala's Parquet writer. The file metadata indicates 2 * MAX_INT32 rows. The single row group also has the same number of rows in the metadata. repeated_values.parquet: Generated with parquet-mr 1.2.5 Contains 3 single-column rows: "parquet" "parquet" "parquet" multiple_rowgroups.parquet: Generated with parquet-mr 1.2.5 Populated with: hive> set parquet.block.size=500; hive> INSERT INTO TABLE tbl SELECT l_comment FROM tpch.lineitem LIMIT 1000; alltypesagg_hive_13_1.parquet: Generated with parquet-mr version 1.5.0-cdh5.4.0-SNAPSHOT hive> create table alltypesagg_hive_13_1 stored as parquet as select * from alltypesagg; bad_column_metadata.parquet: Generated with hacked version of parquet-mr 1.8.2-SNAPSHOT Schema: {"type": "record", "namespace": "org.apache.impala", "name": "bad_column_metadata", "fields": [ {"name": "id", "type": ["null", "long"]}, {"name": "int_array", "type": ["null", {"type": "array", "items": ["null", "int"]}]} ] } Contains 3 row groups, each with ten rows and each array containing ten elements. The first rowgroup column metadata for 'int_array' incorrectly states there are 50 values (instead of 100), and the second rowgroup column metadata for 'id' incorrectly states there are 11 values (instead of 10). The third rowgroup has the correct metadata. data-bzip2.bz2: Generated with bzip2, contains single bzip2 stream Contains 1 column, uncompressed data size < 8M large_bzip2.bz2: Generated with bzip2, contains single bzip2 stream Contains 1 column, uncompressed data size > 8M data-pbzip2.bz2: Generated with pbzip2, contains multiple bzip2 streams Contains 1 column, uncompressed data size < 8M large_pbzip2.bz2: Generated with pbzip2, contains multiple bzip2 stream Contains 1 column, uncompressed data size > 8M out_of_range_timestamp.parquet: Generated with a hacked version of Impala parquet writer. Contains a single timestamp column with 4 values, 2 of which are out of range and should be read as NULL by Impala: 1399-12-31 00:00:00 (invalid - date too small) 1400-01-01 00:00:00 9999-12-31 00:00:00 10000-01-01 00:00:00 (invalid - date too large) table_with_header.csv: Created with a text editor, contains a header line before the data rows. table_with_header_2.csv: Created with a text editor, contains two header lines before the data rows. table_with_header.gz, table_with_header_2.gz: Generated by gzip'ing table_with_header.csv and table_with_header_2.csv. deprecated_statistics.parquet: Generated with with hive shell, which uses parquet-mr version 1.5.0-cdh5.12.0-SNAPSHOT Contains a copy of the data in functional.alltypessmall with statistics that use the old 'min'/'max' fields. repeated_root_schema.parquet: Generated by hacking Impala's Parquet writer. Created to reproduce IMPALA-4826. Contains a table of 300 rows where the repetition level of the root schema is set to REPEATED. Reproduction steps: 1: Extend HdfsParquetTableWriter::CreateSchema with the following line: file_metadata_.schema[0].__set_repetition_type(FieldRepetitionType::REQUIRED); 2: Run test_compute_stats and grab the created Parquet file for alltypes_parquet table. binary_decimal_dictionary.parquet, binary_decimal_no_dictionary.parquet: Generated using parquet-mr and contents verified using parquet-tools-1.9.1. Contains decimals stored as variable sized BYTE_ARRAY with both dictionary and non-dictionary encoding respectively. alltypes_agg_bitpacked_def_levels.parquet: Generated by hacking Impala's Parquet writer to write out bitpacked def levels instead of the standard RLE-encoded levels. See https://github.com/timarmstrong/incubator-impala/tree/hack-bit-packed-levels. This is a single file containing all of the alltypesagg data, which includes a mix of null and non-null values. This is not actually a valid Parquet file because the bit-packed levels are written in the reverse order specified in the Parquet spec for BIT_PACKED. However, this is the order that Impala attempts to read the levels in - see IMPALA-3006. signed_integer_logical_types.parquet: Generated using a utility that uses the java Parquet API. The file has the following schema: schema { optional int32 id; optional int32 tinyint_col (INT_8); optional int32 smallint_col (INT_16); optional int32 int_col; optional int64 bigint_col; } min_max_is_nan.parquet: Generated by Impala's Parquet writer before the fix for IMPALA-6527. Git hash: 3a049a53 Created to test the read path for a Parquet file with invalid metadata, namely when 'max_value' and 'min_value' are both NaN. Contains 2 single-column rows: NaN 42 bad_codec.parquet: Generated by Impala's Parquet writer, hacked to use the invalid enum value 5000 for the compression codec. The data in the file is the whole of the "alltypestiny" data set, with the same columns: id int, bool_col boolean, tinyint_col tinyint, smallint_col smallint, int_col int, bigint_col bigint, float_col float, double_col double, date_string_col string, string_col string, timestamp_col timestamp, year int, month int num_values_def_levels_mismatch.parquet: A file with a single boolean column with page metadata reporting 2 values but only def levels for a single literal value. Generated by hacking Impala's parquet writer to increment page.header.data_page_header.num_values. This caused Impala to hit a DCHECK (IMPALA-6589). rle_encoded_bool.parquet: Parquet v1 file with RLE encoded boolean column "b" and int column "i". Created for IMPALA-6324, generated with modified parquet-mr. Contains 279 rows, 139 with value false, and 140 with value true. "i" is always 1 if "b" is True and always 0 if "b" is false. dict_encoding_with_large_bit_width.parquet: Parquet file with a single TINYINT column "i" with 33 rows. Created by a modified Impala to use 9 bit dictionary indices for encoding. Reading this file used to lead to DCHECK errors (IMPALA-7147). decimal_stored_as_int32.parquet: Parquet file generated by Spark 2.3.1 that contains decimals stored as int32. Impala needs to be able to read such values (IMPALA-5542) decimal_stored_as_int64.parquet: Parquet file generated by Spark 2.3.1 that contains decimals stored as int64. Impala needs to be able to read such values (IMPALA-5542) primitive_type_widening.parquet: Parquet file that contains two rows with the following schema: - int32 tinyint_col1 - int32 tinyint_col2 - int32 tinyint_col3 - int32 tinyint_col4 - int32 smallint_col1 - int32 smallint_col2 - int32 smallint_col3 - int32 int_col1 - int32 int_col2 - float float_col It is used to test primitive type widening (IMPALA-6373). corrupt_footer_len_decr.parquet: Parquet file that contains one row of the following schema: - bigint c The footer size is manually modified (using hexedit) to be the original file size minus 1, to cause metadata deserialization in footer parsing to fail, thus trigger the printing of an error message with incorrect file offset, to verify that it's fixed by IMPALA-6442. corrupt_footer_len_incr.parquet: Parquet file that contains one row of the following schema: - bigint c The footer size is manually modified (using hexedit) to be larger than the original file size and cause footer parsing to fail. It's used to test an error message related to IMPALA-6442. hive_single_value_timestamp.parq: Parquet file written by Hive with the followin schema: i int, timestamp d Contains a single row. It is used to test IMPALA-7559 which only occurs when all values in a column chunk are the same timestamp and the file is written with parquet-mr (which is used by Hive). out_of_range_time_of_day.parquet: IMPALA-7595: Parquet file that contains timestamps where the time part is out of the valid range [0..24H). Before the fix, select * returned these values: 1970-01-01 -00:00:00.000000001 (invalid - negative time of day) 1970-01-01 00:00:00 1970-01-01 23:59:59.999999999 1970-01-01 24:00:00 (invalid - time of day should be less than a whole day)