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Extend PrestoSerializer::deserialize to allow appending to existing vector #7447

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mbasmanova
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The new capability will allow for efficient merging of small batched in Exchange operator.

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netlify bot commented Nov 7, 2023

Deploy Preview for meta-velox canceled.

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🔨 Latest commit 4efd5d7
🔍 Latest deploy log https://app.netlify.com/sites/meta-velox/deploys/654b411b5f5e5d000846e1dd

@facebook-github-bot facebook-github-bot added the CLA Signed This label is managed by the Facebook bot. Authors need to sign the CLA before a PR can be reviewed. label Nov 7, 2023
@mbasmanova mbasmanova force-pushed the presto-serde-append branch 6 times, most recently from 5fb8d0b to 2242d56 Compare November 7, 2023 14:16
@mbasmanova mbasmanova requested a review from xiaoxmeng November 7, 2023 14:16
@mbasmanova mbasmanova marked this pull request as ready for review November 7, 2023 14:17
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@mbasmanova has imported this pull request. If you are a Meta employee, you can view this diff on Phabricator.

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@mbasmanova LGTM. Thanks!

@@ -970,6 +1133,7 @@ class VectorStream {
}
[[fallthrough]];
case TypeKind::ARRAY:
[[fallthrough]];
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Shall we use FOLLY_FALLTHROUGH? Thanks!

nulls->asMutable<uint64_t>(), 0, resultOffset, bits::kNotNull);
}

auto rawNulls = nulls->asMutable<uint8_t>() + bits::nbytes(resultOffset);
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nit: auto* rawNulls

scatterBits(scatterSize, scatter, values);

for (auto index = scatterSize - 1; index >= 0; --index) {
auto destination = scatter[index];
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nit: const auto destination =

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@mbasmanova has imported this pull request. If you are a Meta employee, you can view this diff on Phabricator.

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@mbasmanova has imported this pull request. If you are a Meta employee, you can view this diff on Phabricator.

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@mbasmanova has imported this pull request. If you are a Meta employee, you can view this diff on Phabricator.

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@mbasmanova merged this pull request in 4659a3d.

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Conbench analyzed the 1 benchmark run on commit 4659a3d4.

There were no benchmark performance regressions. 🎉

The full Conbench report has more details.

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3 participants