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# This test will test that barrier latency does not spike | ||
# when there's rate limit on source. | ||
# The upstream side should backpressure the source reader, | ||
# but still allow barriers to flow through. | ||
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statement ok | ||
SET STREAMING_PARALLELISM=2; | ||
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statement ok | ||
SET STREAMING_RATE_LIMIT=1; | ||
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statement ok | ||
CREATE TABLE source_table (i1 int) | ||
WITH ( | ||
connector = 'datagen', | ||
fields.i1.start = '1', | ||
fields.i1.end = '5', | ||
datagen.rows.per.second = '10000' | ||
) FORMAT PLAIN ENCODE JSON; | ||
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statement ok | ||
CREATE SINK sink AS | ||
SELECT x.i1 as i1 FROM source_table x | ||
JOIN source_table s1 ON x.i1 = s1.i1 | ||
JOIN source_table s2 ON x.i1 = s2.i1 | ||
JOIN source_table s3 ON x.i1 = s3.i1 | ||
WITH (connector = 'blackhole'); | ||
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# The following sequence of FLUSH should be fast, since barrier should be able to bypass sink. | ||
# Otherwise, these FLUSH will take a long time to complete, and trigger timeout. | ||
statement ok | ||
flush; | ||
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statement ok | ||
flush; | ||
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statement ok | ||
flush; | ||
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statement ok | ||
drop sink sink; | ||
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statement ok | ||
drop table source_table; |
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