mirror of https://github.com/citusdata/citus.git
76 lines
1.5 KiB
Ruby
76 lines
1.5 KiB
Ruby
setup
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{
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CREATE TABLE test_concurrent_dml (test_id integer NOT NULL, data text);
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SELECT master_create_distributed_table('test_concurrent_dml', 'test_id', 'hash');
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SELECT master_create_worker_shards('test_concurrent_dml', 4, 2);
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}
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teardown
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{
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DROP TABLE IF EXISTS test_concurrent_dml CASCADE;
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}
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session "s1"
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step "s1-begin"
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{
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BEGIN;
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}
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step "s1-insert"
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{
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INSERT INTO test_concurrent_dml VALUES(1);
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}
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step "s1-multi-insert"
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{
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INSERT INTO test_concurrent_dml VALUES (1), (2);
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}
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step "s1-commit"
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{
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COMMIT;
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}
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session "s2"
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step "s2-begin"
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{
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BEGIN;
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}
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step "s2-update"
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{
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UPDATE test_concurrent_dml SET data = 'blarg' WHERE test_id = 1;
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}
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step "s2-multi-insert-overlap"
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{
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INSERT INTO test_concurrent_dml VALUES (1), (4);
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}
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step "s2-multi-insert"
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{
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INSERT INTO test_concurrent_dml VALUES (3), (4);
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}
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step "s2-commit"
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{
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COMMIT;
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}
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# verify that an in-progress insert blocks concurrent updates
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permutation "s1-begin" "s1-insert" "s2-update" "s1-commit"
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# but an insert without xact will not block
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permutation "s1-insert" "s2-update"
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# verify that an in-progress multi-row insert blocks concurrent updates
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permutation "s1-begin" "s1-multi-insert" "s2-update" "s1-commit"
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# two multi-row inserts that hit same shards will block
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permutation "s1-begin" "s1-multi-insert" "s2-multi-insert-overlap" "s1-commit"
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# but concurrent multi-row inserts don't block unless shards overlap
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permutation "s1-begin" "s2-begin" "s1-multi-insert" "s2-multi-insert" "s1-commit" "s2-commit"
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