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0449b5beab
For Parquet files with no row groups but with num_rows=0 in the file footer the Parquet scanner returns an error indicating that the file is invalid. This behavior is a regression from previous Impala versions which used to accept such files. This patch restores the previous behavior and adds tests. Change-Id: I50ac3df6ff24bc5c384ef22e0f804a5132adb62e Reviewed-on: http://gerrit.cloudera.org:8080/4693 Reviewed-by: Alex Behm <alex.behm@cloudera.com> Tested-by: Internal Jenkins
bad_parquet_data.parquet:
Generated with parquet-mr 1.2.5
Contains 3 single-column rows:
"parquet"
"is"
"fun"
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.
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