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Original file line number Diff line number Diff line change
Expand Up @@ -19,6 +19,8 @@ namespace NKikimr::NKqp {
namespace {

class TScriptFinalizerActor : public TActorBootstrapped<TScriptFinalizerActor> {
static constexpr size_t MAX_ARTIFACTS_SIZE_BYTES = 40_MB;

public:
TScriptFinalizerActor(TEvScriptFinalizeRequest::TPtr request,
const NKikimrConfig::TQueryServiceConfig& queryServiceConfig,
Expand All @@ -37,6 +39,14 @@ class TScriptFinalizerActor : public TActorBootstrapped<TScriptFinalizerActor> {

void CompressScriptArtifacts() const {
auto& description = Request->Get()->Description;

TString astTruncateDescription;
if (size_t planSize = description.QueryPlan.value_or("").size(); description.QueryAst && description.QueryAst->size() + planSize > MAX_ARTIFACTS_SIZE_BYTES) {
astTruncateDescription = TStringBuilder() << "Query artifacts size is " << description.QueryAst->size() + planSize << " bytes (plan + ast), that is larger than allowed limit " << MAX_ARTIFACTS_SIZE_BYTES << " bytes, ast was truncated";
size_t toRemove = std::min(description.QueryAst->size() + planSize - MAX_ARTIFACTS_SIZE_BYTES, description.QueryAst->size());
description.QueryAst = TruncateString(*description.QueryAst, description.QueryAst->size() - toRemove);
}

auto ast = description.QueryAst;
if (Compressor.IsEnabled() && ast) {
const auto& [astCompressionMethod, astCompressed] = Compressor.Compress(*ast);
Expand All @@ -45,12 +55,15 @@ class TScriptFinalizerActor : public TActorBootstrapped<TScriptFinalizerActor> {
}

if (description.QueryAst && description.QueryAst->size() > NDataShard::NLimits::MaxWriteValueSize) {
NYql::TIssue astTruncatedIssue(TStringBuilder() << "Query ast size is " << description.QueryAst->size() << " bytes, that is larger than allowed limit " << NDataShard::NLimits::MaxWriteValueSize << " bytes, ast was truncated");
astTruncateDescription = TStringBuilder() << "Query ast size is " << description.QueryAst->size() << " bytes, that is larger than allowed limit " << NDataShard::NLimits::MaxWriteValueSize << " bytes, ast was truncated";
description.QueryAst = TruncateString(*ast, NDataShard::NLimits::MaxWriteValueSize - 1_KB);
description.QueryAstCompressionMethod = std::nullopt;
}

if (astTruncateDescription) {
NYql::TIssue astTruncatedIssue(astTruncateDescription);
astTruncatedIssue.SetCode(NYql::DEFAULT_ERROR, NYql::TSeverityIds::S_INFO);
description.Issues.AddIssue(astTruncatedIssue);

description.QueryAst = ast->substr(0, NDataShard::NLimits::MaxWriteValueSize - 1_KB) + "...\n(TRUNCATED)";
description.QueryAstCompressionMethod = std::nullopt;
}
}

Expand Down Expand Up @@ -223,6 +236,11 @@ class TScriptFinalizerActor : public TActorBootstrapped<TScriptFinalizerActor> {
PassAway();
}

private:
static TString TruncateString(const TString& str, size_t size) {
return str.substr(0, std::min(str.size(), size)) + "...\n(TRUNCATED)";
}

private:
const TActorId ReplyActor;
const TString ExecutionId;
Expand Down