Description
We use number of use keys as maxParallelism. But we already do BulkGet() from KV i think we should make it default to 0 and let execution time decide it.
https://github.com/couchbase/query/blob/master/planner/build_scan.go#L28
explain select meta().id from default use keys ["1","1","1","1","1","1","1","1","1","1","1","1","1","1","1","1","1","1","1","1","1","1","1","1","1","1","1","1","1","1"];
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{
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"requestID": "2c461ebc-bdb9-4d2c-a20a-2ea887e9ec0d",
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"signature": "json",
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"results": [
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{
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"plan": {
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"#operator": "Sequence",
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"~children": [
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{
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"#operator": "KeyScan",
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"keys": "[\"1\", \"1\", \"1\", \"1\", \"1\", \"1\", \"1\", \"1\", \"1\", \"1\", \"1\", \"1\", \"1\", \"1\", \"1\", \"1\", \"1\", \"1\", \"1\", \"1\", \"1\", \"1\", \"1\", \"1\", \"1\", \"1\", \"1\", \"1\", \"1\", \"1\"]"
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},
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{
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"#operator": "Fetch",
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"keyspace": "default",
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"namespace": "default"
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},
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{
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"#operator": "Parallel",
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"maxParallelism": 30,
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"~child": {
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"#operator": "Sequence",
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"~children": [
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{
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"#operator": "InitialProject",
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"result_terms": [
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{
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"expr": "(meta(`default`).`id`)"
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}
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]
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},
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{
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"#operator": "FinalProject"
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}
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]
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}
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}
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]
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},
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"text": "select meta().id from default use keys [\"1\",\"1\",\"1\",\"1\",\"1\",\"1\",\"1\",\"1\",\"1\",\"1\",\"1\",\"1\",\"1\",\"1\",\"1\",\"1\",\"1\",\"1\",\"1\",\"1\",\"1\",\"1\",\"1\",\"1\",\"1\",\"1\",\"1\",\"1\",\"1\",\"1\"];"
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}
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],
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"status": "success",
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"metrics": {
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"elapsedTime": "1.444099ms",
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"executionTime": "1.415513ms",
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"resultCount": 1,
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"resultSize": 1753
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}
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}
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