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FLASH-554 cop check range should be based on region range #270

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merged 7 commits into from
Oct 10, 2019
Merged

FLASH-554 cop check range should be based on region range #270

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9d2d607
only return execute summaies if requested
windtalker Sep 30, 2019
3013882
Merge branch 'cop' of https://github.com/pingcap/tics into test
windtalker Oct 8, 2019
23313c0
Merge branch 'cop' of https://github.com/pingcap/tics into test
windtalker Oct 10, 2019
806cecb
cop check range should be based on region range
windtalker Oct 10, 2019
f2b3d09
address comments
windtalker Oct 10, 2019
47b8bda
add tests
windtalker Oct 10, 2019
a7ed686
minor improve
windtalker Oct 10, 2019
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64 changes: 50 additions & 14 deletions dbms/src/Flash/Coprocessor/InterpreterDAG.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -47,13 +47,14 @@ InterpreterDAG::InterpreterDAG(Context & context_, const DAGQuerySource & dag_)
{}

template <typename HandleType>
bool isAllValueCoveredByRanges(std::vector<HandleRange<HandleType>> & ranges)
bool isAllValueCoveredByRanges(std::vector<HandleRange<HandleType>> & ranges, std::vector<HandleRange<HandleType>> & region_ranges)
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{
if (ranges.empty())
return false;
std::sort(ranges.begin(), ranges.end(),
[](const HandleRange<HandleType> & a, const HandleRange<HandleType> & b) { return a.first < b.first; });

std::vector<HandleRange<HandleType>> merged_ranges;
HandleRange<HandleType> merged_range;
merged_range.first = ranges[0].first;
merged_range.second = ranges[0].second;
Expand All @@ -63,41 +64,77 @@ bool isAllValueCoveredByRanges(std::vector<HandleRange<HandleType>> & ranges)
if (merged_range.second >= ranges[i].first)
merged_range.second = merged_range.second >= ranges[i].second ? merged_range.second : ranges[i].second;
else
break;
{
merged_ranges.emplace_back(std::make_pair(merged_range.first, merged_range.second));
merged_range.first = ranges[i].first;
merged_range.second = ranges[i].second;
}
}
merged_ranges.emplace_back(std::make_pair(merged_range.first, merged_range.second));

return merged_range.first == TiKVHandle::Handle<HandleType>::normal_min && merged_range.second == TiKVHandle::Handle<HandleType>::max;
for (auto & region_range : region_ranges)
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{
bool covered = false;
for (auto & range : merged_ranges)
{
if (region_range.first >= range.first && region_range.second <= range.second)
{
covered = true;
break;
}
}
if (!covered)
return false;
}
return true;
}

bool checkKeyRanges(const std::vector<std::pair<DecodedTiKVKey, DecodedTiKVKey>> & key_ranges, TableID table_id, bool pk_is_uint64)
bool checkKeyRanges(const std::vector<std::pair<DecodedTiKVKey, DecodedTiKVKey>> & key_ranges, TableID table_id, bool pk_is_uint64,
const ImutRegionRangePtr & region_key_range)
{
if (key_ranges.empty())
return true;

std::vector<HandleRange<Int64>> scan_ranges;
std::vector<HandleRange<Int64>> handle_ranges;
for (auto & range : key_ranges)
{
TiKVRange::Handle start = TiKVRange::getRangeHandle<true>(range.first, table_id);
TiKVRange::Handle end = TiKVRange::getRangeHandle<false>(range.second, table_id);
scan_ranges.emplace_back(std::make_pair(start, end));
handle_ranges.emplace_back(std::make_pair(start, end));
}

std::vector<HandleRange<Int64>> region_handle_ranges;
auto & raw_keys = region_key_range->rawKeys();
TiKVRange::Handle region_start = TiKVRange::getRangeHandle<true>(raw_keys.first, table_id);
TiKVRange::Handle region_end = TiKVRange::getRangeHandle<false>(raw_keys.second, table_id);
region_handle_ranges.emplace_back(std::make_pair(region_start, region_end));

if (pk_is_uint64)
{
std::vector<HandleRange<UInt64>> update_ranges;
for (auto & range : scan_ranges)
std::vector<HandleRange<UInt64>> update_handle_ranges;
for (auto & range : handle_ranges)
{
const auto [n, new_range] = CHTableHandle::splitForUInt64TableHandle(range);

for (int i = 0; i < n; i++)
{
update_ranges.emplace_back(new_range[i]);
update_handle_ranges.emplace_back(new_range[i]);
}
}
return isAllValueCoveredByRanges<UInt64>(update_ranges);
std::vector<HandleRange<UInt64>> update_region_handle_ranges;
for (auto & range : region_handle_ranges)
{
const auto [n, new_range] = CHTableHandle::splitForUInt64TableHandle(range);

for (int i = 0; i < n; i++)
{
update_region_handle_ranges.emplace_back(new_range[i]);
}
}
return isAllValueCoveredByRanges<UInt64>(update_handle_ranges, update_region_handle_ranges);
}
else
return isAllValueCoveredByRanges<Int64>(scan_ranges);
return isAllValueCoveredByRanges<Int64>(handle_ranges, region_handle_ranges);
}
// the flow is the same as executeFetchcolumns
void InterpreterDAG::executeTS(const tipb::TableScan & ts, Pipeline & pipeline)
Expand Down Expand Up @@ -206,9 +243,6 @@ void InterpreterDAG::executeTS(const tipb::TableScan & ts, Pipeline & pipeline)
max_streams *= settings.max_streams_to_max_threads_ratio;
}

if (!checkKeyRanges(dag.getKeyRanges(), table_id, storage->pkIsUInt64()))
throw Exception("Cop request only support full range scan for given region", ErrorCodes::COP_BAD_DAG_REQUEST);

if (dag.hasSelection())
{
for (auto & condition : dag.getSelection().conditions())
Expand All @@ -235,6 +269,8 @@ void InterpreterDAG::executeTS(const tipb::TableScan & ts, Pipeline & pipeline)
region_ids.push_back(info.region_id);
throw RegionException(std::move(region_ids), RegionTable::RegionReadStatus::NOT_FOUND);
}
if (!checkKeyRanges(dag.getKeyRanges(), table_id, storage->pkIsUInt64(), current_region->getRange()))
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throw Exception("Cop request only support full range scan for given region", ErrorCodes::COP_BAD_DAG_REQUEST);
info.range_in_table = current_region->getHandleRangeByTable(table_id);
query_info.mvcc_query_info->regions_query_info.push_back(info);
query_info.mvcc_query_info->concurrent = 0.0;
Expand Down