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c9740b43d1
The query 'SET <option>=""' will now unset an option within the session, reverting it to its default state. This change became necessary when "SET" started returning an empty string for unset options which don't have a default. The test infrastructure (impala_test_suite.py) resets options to what it thinks is its defaults, and, when this broke, some ASAN builds started to fail, presumably due to a timing issue with how we re-use connections between tests. Previously, SessionState copied over the default options from the server when the session was created and then mutated that. To support unsetting options at the session layer, this change keeps a pointer to the default server settings, keeps separately the mutations, and overlays the options each time they're requested. Similarly, for configuration overlays that happen per-query, the overlay is now done explicitly, because empty per-query overlay values (key=..., value="") now have no effect. Because "set key=''" is ambiguous between "set to the empty string" and "unset", it's now impossible to set to the empty string, at the session layer, an option that is configured at a previous layer. In practice, this is just debug_action and request_pool. debug_action is essentially an internal tool. For request_pool, this means that setting the default request_pool via impalad command line is now a bad idea, as it can't be cleared at a per-session level. For request_pool, the correct course of action for users is to use placement rules, and to have a default placement rule. Testing: * Added a simple test that triggered this side-effect without this code. Specifically, "impala-python infra/python/env/bin/py.test tests/metadata/test_set.py -s" with the modified set.test triggers. * Amended tests/custom_cluster/test_admission_controller.py; it was useful for testing these code paths. * Added cases to query-options-test to check behavior for both defaulted and non-defaulted values. * Added a custom cluster test that checks that overlays are working against * Ran an ASAN build where this was triggering previously. Change-Id: Ia8c383e68064f839cb5000118901dff77b4e5cb9 Reviewed-on: http://gerrit.cloudera.org:8080/8070 Reviewed-by: Tim Armstrong <tarmstrong@cloudera.com> Tested-by: Impala Public Jenkins
300 lines
6.8 KiB
Plaintext
300 lines
6.8 KiB
Plaintext
====
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---- QUERY
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# Set an option explicitly; the test infrastructure should clear it before the next test.
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# The next test tests that buffer_pool_limit is unset ("").
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set buffer_pool_limit=7;
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====
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---- QUERY
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set
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---- RESULTS: VERIFY_IS_SUBSET
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'ABORT_ON_DEFAULT_LIMIT_EXCEEDED','0'
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'ABORT_ON_ERROR','0'
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'ALLOW_UNSUPPORTED_FORMATS','0'
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'BATCH_SIZE','0'
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'BUFFER_POOL_LIMIT',''
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'DEBUG_ACTION',''
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'DEFAULT_ORDER_BY_LIMIT','-1'
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'DISABLE_CACHED_READS','0'
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'DISABLE_CODEGEN','0'
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'DISABLE_OUTERMOST_TOPN','0'
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'EXPLAIN_LEVEL','1'
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'HBASE_CACHE_BLOCKS','0'
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'HBASE_CACHING','0'
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'MAX_ERRORS','100'
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'MAX_IO_BUFFERS','0'
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'MAX_SCAN_RANGE_LENGTH','0'
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'MEM_LIMIT','0'
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'NUM_NODES','0'
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'NUM_SCANNER_THREADS','0'
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'COMPRESSION_CODEC',''
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'PARQUET_FILE_SIZE','0'
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'REQUEST_POOL',''
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'RESERVATION_REQUEST_TIMEOUT',''
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'RM_INITIAL_MEM','0'
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'SYNC_DDL','0'
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'V_CPU_CORES',''
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---- TYPES
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STRING, STRING
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====
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---- QUERY
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set explain_level=3;
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set;
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---- RESULTS: VERIFY_IS_SUBSET
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'ABORT_ON_DEFAULT_LIMIT_EXCEEDED','0'
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'ABORT_ON_ERROR','0'
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'ALLOW_UNSUPPORTED_FORMATS','0'
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'BATCH_SIZE','0'
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'DEBUG_ACTION',''
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'DEFAULT_ORDER_BY_LIMIT','-1'
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'DISABLE_CACHED_READS','0'
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'DISABLE_CODEGEN','0'
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'DISABLE_OUTERMOST_TOPN','0'
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'EXPLAIN_LEVEL','3'
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'HBASE_CACHE_BLOCKS','0'
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'HBASE_CACHING','0'
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'MAX_ERRORS','100'
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'MAX_IO_BUFFERS','0'
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'MAX_SCAN_RANGE_LENGTH','0'
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'MEM_LIMIT','0'
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'NUM_NODES','0'
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'NUM_SCANNER_THREADS','0'
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'COMPRESSION_CODEC',''
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'PARQUET_FILE_SIZE','0'
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'REQUEST_POOL',''
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'RESERVATION_REQUEST_TIMEOUT',''
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'RM_INITIAL_MEM','0'
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'SYNC_DDL','0'
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'V_CPU_CORES',''
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---- TYPES
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STRING, STRING
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====
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---- QUERY
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set explain_level='0';
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set;
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---- RESULTS: VERIFY_IS_SUBSET
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'ABORT_ON_DEFAULT_LIMIT_EXCEEDED','0'
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'ABORT_ON_ERROR','0'
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'ALLOW_UNSUPPORTED_FORMATS','0'
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'BATCH_SIZE','0'
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'DEBUG_ACTION',''
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'DEFAULT_ORDER_BY_LIMIT','-1'
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'DISABLE_CACHED_READS','0'
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'DISABLE_CODEGEN','0'
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'DISABLE_OUTERMOST_TOPN','0'
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'EXPLAIN_LEVEL','0'
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'HBASE_CACHE_BLOCKS','0'
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'HBASE_CACHING','0'
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'MAX_ERRORS','100'
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'MAX_IO_BUFFERS','0'
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'MAX_SCAN_RANGE_LENGTH','0'
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'MEM_LIMIT','0'
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'NUM_NODES','0'
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'NUM_SCANNER_THREADS','0'
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'COMPRESSION_CODEC',''
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'PARQUET_FILE_SIZE','0'
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'REQUEST_POOL',''
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'RESERVATION_REQUEST_TIMEOUT',''
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'RM_INITIAL_MEM','0'
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'SYNC_DDL','0'
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'V_CPU_CORES',''
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---- TYPES
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STRING, STRING
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====
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---- QUERY
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# IMPALA-1906: Test that SET changes PARQUET_FILE_SIZE only if it's less than 2GB.
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set parquet_file_size='1.5g';
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set;
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---- RESULTS: VERIFY_IS_SUBSET
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'ABORT_ON_DEFAULT_LIMIT_EXCEEDED','0'
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'ABORT_ON_ERROR','0'
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'ALLOW_UNSUPPORTED_FORMATS','0'
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'BATCH_SIZE','0'
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'DEBUG_ACTION',''
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'DEFAULT_ORDER_BY_LIMIT','-1'
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'DISABLE_CACHED_READS','0'
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'DISABLE_CODEGEN','0'
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'DISABLE_OUTERMOST_TOPN','0'
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'EXPLAIN_LEVEL','1'
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'HBASE_CACHE_BLOCKS','0'
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'HBASE_CACHING','0'
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'MAX_ERRORS','100'
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'MAX_IO_BUFFERS','0'
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'MAX_SCAN_RANGE_LENGTH','0'
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'MEM_LIMIT','0'
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'NUM_NODES','0'
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'NUM_SCANNER_THREADS','0'
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'COMPRESSION_CODEC',''
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'PARQUET_FILE_SIZE','1610612736'
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'REQUEST_POOL',''
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'RESERVATION_REQUEST_TIMEOUT',''
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'RM_INITIAL_MEM','0'
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'SYNC_DDL','0'
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'V_CPU_CORES',''
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---- TYPES
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STRING, STRING
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====
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---- QUERY
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set parquet_file_size='2g'
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---- CATCH
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The PARQUET_FILE_SIZE query option must be less than 2GB.
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====
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---- QUERY
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set foo=bar
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---- CATCH
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Invalid query option: foo
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====
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---- QUERY
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set parquet_compression_codec=bar
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---- CATCH
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Invalid compression codec: bar
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====
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---- QUERY
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# Test that SET actually does change the mem_limit.
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# First, show mem_limit is not hit.
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select 1
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---- RESULTS
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1
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====
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---- QUERY
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# Set mem_limit really small so that queries will fail.
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set mem_limit=1;
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select count(string_col) from functional.alltypestiny
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---- CATCH
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Memory limit exceeded
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====
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---- QUERY
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# Set mem_limit back to unlimited and query should succeed again.
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set mem_limit=0;
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select count(string_col) from functional.alltypestiny
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---- RESULTS
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8
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---- TYPES
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BIGINT
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====
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---- QUERY
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# IMPALA-3334: 'optimize_partition_key_scans' is a boolean query option
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set explain_level=0;
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set optimize_partition_key_scans=true;
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explain select min(month), max(year), ndv(day) from functional.alltypesagg;
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---- RESULTS: VERIFY_IS_SUBSET
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'01:AGGREGATE [FINALIZE]'
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'00:UNION'
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' constant-operands=11'
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====
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---- QUERY
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set explain_level=0;
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set optimize_partition_key_scans=1;
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explain select min(month), max(year), ndv(day) from functional.alltypesagg;
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---- RESULTS: VERIFY_IS_SUBSET
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'01:AGGREGATE [FINALIZE]'
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'00:UNION'
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' constant-operands=11'
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====
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---- QUERY
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set explain_level=0;
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set optimize_partition_key_scans=false;
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explain select min(month), max(year), ndv(day) from functional.alltypesagg;
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---- RESULTS: VERIFY_IS_SUBSET
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'03:AGGREGATE [FINALIZE]'
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'02:EXCHANGE [UNPARTITIONED]'
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'01:AGGREGATE'
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'00:SCAN HDFS [functional.alltypesagg]'
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====
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---- QUERY
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set explain_level=0;
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set optimize_partition_key_scans=0;
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explain select min(month), max(year), ndv(day) from functional.alltypesagg;
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---- RESULTS: VERIFY_IS_SUBSET
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'03:AGGREGATE [FINALIZE]'
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'02:EXCHANGE [UNPARTITIONED]'
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'01:AGGREGATE'
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'00:SCAN HDFS [functional.alltypesagg]'
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====
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---- QUERY
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set explain_level=0;
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set disable_streaming_preaggregations=false;
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explain select count(distinct double_col) from functional.alltypesagg;
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---- RESULTS: VERIFY_IS_SUBSET
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'06:AGGREGATE [FINALIZE]'
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'05:EXCHANGE [UNPARTITIONED]'
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'02:AGGREGATE'
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'04:AGGREGATE'
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'03:EXCHANGE [HASH(double_col)]'
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'01:AGGREGATE [STREAMING]'
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'00:SCAN HDFS [functional.alltypesagg]'
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====
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---- QUERY
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set explain_level=0;
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set disable_streaming_preaggregations=0;
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explain select count(distinct double_col) from functional.alltypesagg;
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---- RESULTS: VERIFY_IS_SUBSET
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'06:AGGREGATE [FINALIZE]'
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'05:EXCHANGE [UNPARTITIONED]'
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'02:AGGREGATE'
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'04:AGGREGATE'
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'03:EXCHANGE [HASH(double_col)]'
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'01:AGGREGATE [STREAMING]'
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'00:SCAN HDFS [functional.alltypesagg]'
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====
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---- QUERY
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set explain_level=0;
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set disable_streaming_preaggregations=true;
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explain select count(distinct double_col) from functional.alltypesagg;
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---- RESULTS: VERIFY_IS_SUBSET
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'06:AGGREGATE [FINALIZE]'
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'05:EXCHANGE [UNPARTITIONED]'
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'02:AGGREGATE'
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'04:AGGREGATE'
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'03:EXCHANGE [HASH(double_col)]'
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'01:AGGREGATE'
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'00:SCAN HDFS [functional.alltypesagg]'
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====
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---- QUERY
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set explain_level=0;
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set disable_streaming_preaggregations=1;
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explain select count(distinct double_col) from functional.alltypesagg;
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---- RESULTS: VERIFY_IS_SUBSET
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'06:AGGREGATE [FINALIZE]'
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'05:EXCHANGE [UNPARTITIONED]'
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'02:AGGREGATE'
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'04:AGGREGATE'
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'03:EXCHANGE [HASH(double_col)]'
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'01:AGGREGATE'
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'00:SCAN HDFS [functional.alltypesagg]'
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====
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---- QUERY
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# IMPALA-5591: This shouldn't throw an error.
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set scratch_limit=-1;
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====
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---- QUERY
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# Power of two max_row_size.
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set max_row_size=8m;
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set;
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---- RESULTS: VERIFY_IS_SUBSET
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'MAX_ROW_SIZE','8388608'
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---- TYPES
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STRING,STRING
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====
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---- QUERY
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# Non power of two max_row_size.
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set max_row_size=12345;
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set;
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---- RESULTS: VERIFY_IS_SUBSET
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'MAX_ROW_SIZE','12345'
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---- TYPES
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STRING,STRING
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====
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---- QUERY
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set max_row_size=8m;
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====
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---- QUERY
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set max_row_size=-1;
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---- CATCH
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Max row size must be a positive number of bytes: -1
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====
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---- QUERY
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set max_row_size=0;
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---- CATCH
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Max row size must be a positive number of bytes: 0
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====
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