mirror of
https://github.com/ClickHouse/ClickHouse.git
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69 lines
2.7 KiB
Python
69 lines
2.7 KiB
Python
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import random
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import string
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import pytest
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from helpers.cluster import ClickHouseCluster
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cluster = ClickHouseCluster(__file__)
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node1 = cluster.add_instance('node1', with_zookeeper=True)
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node2 = cluster.add_instance('node2', with_zookeeper=True)
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@pytest.fixture(scope="module")
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def start_cluster():
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try:
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cluster.start()
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yield cluster
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finally:
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cluster.shutdown()
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def get_compression_codec_byte(node, table_name, part_name, filename):
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cmd = "tail -c +17 /var/lib/clickhouse/data/default/{}/{}/{}.bin | od -x -N 1 | head -n 1 | awk '{{print $2}}'".format(
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table_name, part_name, filename)
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return node.exec_in_container(["bash", "-c", cmd]).strip()
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CODECS_MAPPING = {
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'NONE' : '0002',
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'LZ4': '0082',
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'LZ4HC': '0082', # not an error, same byte
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'ZSTD': '0090',
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'Multiple': '0091',
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'Delta': '0092',
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'T64': '0093',
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}
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def test_nested_compression_codec(start_cluster):
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for i, node in enumerate([node1, node2]):
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node.query("""
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CREATE TABLE compression_table (
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key UInt64,
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column_ok Nullable(UInt64) CODEC(Delta, LZ4),
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column_array Array(Array(UInt64)) CODEC(T64, LZ4),
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column_bad LowCardinality(Int64) CODEC(Delta)
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) ENGINE = ReplicatedMergeTree('/t', '{}') ORDER BY tuple() PARTITION BY key
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SETTINGS min_rows_for_wide_part = 0, min_bytes_for_wide_part = 0;
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""".format(i), settings={"allow_suspicious_codecs" : "1", "allow_suspicious_low_cardinality_types" : "1"})
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node1.query("INSERT INTO compression_table VALUES (1, 1, [[77]], 32)")
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node2.query("SYSTEM SYNC REPLICA compression_table", timeout=5)
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node1.query("DETACH TABLE compression_table")
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node2.query("DETACH TABLE compression_table")
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node1.query("ATTACH TABLE compression_table")
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node2.query("ATTACH TABLE compression_table")
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for node in [node1, node2]:
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assert get_compression_codec_byte(node, "compression_table", "1_0_0_0", "column_ok") == CODECS_MAPPING['Multiple']
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assert get_compression_codec_byte(node, "compression_table", "1_0_0_0", "column_ok.null") == CODECS_MAPPING['LZ4']
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assert get_compression_codec_byte(node1, "compression_table", "1_0_0_0", "column_array") == CODECS_MAPPING['Multiple']
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assert get_compression_codec_byte(node2, "compression_table", "1_0_0_0", "column_array.size0") == CODECS_MAPPING['LZ4']
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assert get_compression_codec_byte(node2, "compression_table", "1_0_0_0", "column_array.size1") == CODECS_MAPPING['LZ4']
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assert get_compression_codec_byte(node2, "compression_table", "1_0_0_0", "column_bad.dict") == CODECS_MAPPING['Delta']
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assert get_compression_codec_byte(node1, "compression_table", "1_0_0_0", "column_bad") == CODECS_MAPPING['NONE']
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