scheduler: logical plan fragmenter #7018
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Signed-off-by: rubywtl <[email protected]>
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yeya24
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Sep 14, 2025
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| if len(fragments) > 0 { | ||
| return fragments, nil | ||
| } else { |
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Nit. You can remove this else as we already return above
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| require.NoError(t, err) | ||
| require.Equal(t, tc.expectedFragments, len(res)) | ||
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| // check the metadata of the fragments of binary expressions | ||
| if len(res) == 3 { |
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Why do we need this check? This only works for the second test case?
| query: "sum(rate(http_requests_total{job=\"api\"}[5m])) + sum(rate(http_requests_total{job=\"web\"}[5m])) + sum(rate(http_requests_total{job=\"cache\"}[5m])) + sum(rate(http_requests_total{job=\"db\"}[5m]))", | ||
| start: now, | ||
| end: now, | ||
| expectedFragments: 7, |
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The test should try to compare the output fragments instead of number of fragments to be safer
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What this PR does:
This PR implements a logical plan fragmenter for distributed query execution. The fragmenter identifies fragments based on remote node markers in the logical plan and creates independent execution units that can be distributed across queriers. It maintains execution dependencies between parent and child fragments
Which issue(s) this PR fixes:
related to distributed query execution proposal
Checklist
CHANGELOG.mdupdated - the order of entries should be[CHANGE],[FEATURE],[ENHANCEMENT],[BUGFIX]