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Merge pull request #35284 from CurtizJ/fix-mutations-sparse-columns

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Fix mutations in tables with enabled sparse columns
This commit is contained in:
Alexey Milovidov 2022-03-20 21:55:59 +03:00 committed by GitHub
commit 9b05801e0f
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4 changed files with 28 additions and 13 deletions
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5
src/Storages/MergeTree/MergeTreeDataMergerMutator.cpp
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@ -693,11 +693,10 @@ MergeTreeDataMergerMutator::getColumnsForNewDataPart(
}
}
bool is_wide_part = isWidePart(source_part);
SerializationInfoByName new_serialization_infos;
for (const auto & [name, info] : serialization_infos)
{
if (is_wide_part && removed_columns.count(name))
if (removed_columns.count(name))
continue;
auto it = renamed_columns_from_to.find(name);
@ -709,7 +708,7 @@ MergeTreeDataMergerMutator::getColumnsForNewDataPart(
/// In compact parts we read all columns, because they all stored in a
/// single file
if (!is_wide_part)
if (!isWidePart(source_part))
return {updated_header.getNamesAndTypesList(), new_serialization_infos};
Names source_column_names = source_part->getColumns().getNames();

24
src/Storages/MergeTree/MutateTask.cpp
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@ -422,10 +422,11 @@ void finalizeMutatedPart(
const CompressionCodecPtr & codec)
{
auto disk = new_data_part->volume->getDisk();
auto part_path = fs::path(new_data_part->getFullRelativePath());
if (new_data_part->uuid != UUIDHelpers::Nil)
{
auto out = disk->writeFile(new_data_part->getFullRelativePath() + IMergeTreeDataPart::UUID_FILE_NAME, 4096);
auto out = disk->writeFile(part_path / IMergeTreeDataPart::UUID_FILE_NAME, 4096);
HashingWriteBuffer out_hashing(*out);
writeUUIDText(new_data_part->uuid, out_hashing);
new_data_part->checksums.files[IMergeTreeDataPart::UUID_FILE_NAME].file_size = out_hashing.count();
@ -435,27 +436,36 @@ void finalizeMutatedPart(
if (execute_ttl_type != ExecuteTTLType::NONE)
{
/// Write a file with ttl infos in json format.
auto out_ttl = disk->writeFile(fs::path(new_data_part->getFullRelativePath()) / "ttl.txt", 4096);
auto out_ttl = disk->writeFile(part_path / "ttl.txt", 4096);
HashingWriteBuffer out_hashing(*out_ttl);
new_data_part->ttl_infos.write(out_hashing);
new_data_part->checksums.files["ttl.txt"].file_size = out_hashing.count();
new_data_part->checksums.files["ttl.txt"].file_hash = out_hashing.getHash();
}
if (!new_data_part->getSerializationInfos().empty())
{
auto out = disk->writeFile(part_path / IMergeTreeDataPart::SERIALIZATION_FILE_NAME, 4096);
HashingWriteBuffer out_hashing(*out);
new_data_part->getSerializationInfos().writeJSON(out_hashing);
new_data_part->checksums.files[IMergeTreeDataPart::SERIALIZATION_FILE_NAME].file_size = out_hashing.count();
new_data_part->checksums.files[IMergeTreeDataPart::SERIALIZATION_FILE_NAME].file_hash = out_hashing.getHash();
}
{
/// Write file with checksums.
auto out_checksums = disk->writeFile(fs::path(new_data_part->getFullRelativePath()) / "checksums.txt", 4096);
auto out_checksums = disk->writeFile(part_path / "checksums.txt", 4096);
new_data_part->checksums.write(*out_checksums);
} /// close fd
{
auto out = disk->writeFile(new_data_part->getFullRelativePath() + IMergeTreeDataPart::DEFAULT_COMPRESSION_CODEC_FILE_NAME, 4096);
auto out = disk->writeFile(part_path / IMergeTreeDataPart::DEFAULT_COMPRESSION_CODEC_FILE_NAME, 4096);
DB::writeText(queryToString(codec->getFullCodecDesc()), *out);
}
{
/// Write a file with a description of columns.
auto out_columns = disk->writeFile(fs::path(new_data_part->getFullRelativePath()) / "columns.txt", 4096);
auto out_columns = disk->writeFile(part_path / "columns.txt", 4096);
new_data_part->getColumns().writeText(*out_columns);
} /// close fd
@ -466,7 +476,7 @@ void finalizeMutatedPart(
new_data_part->modification_time = time(nullptr);
new_data_part->loadProjections(false, false);
new_data_part->setBytesOnDisk(
MergeTreeData::DataPart::calculateTotalSizeOnDisk(new_data_part->volume->getDisk(), new_data_part->getFullRelativePath()));
MergeTreeData::DataPart::calculateTotalSizeOnDisk(new_data_part->volume->getDisk(), part_path));
new_data_part->default_codec = codec;
new_data_part->calculateColumnsAndSecondaryIndicesSizesOnDisk();
new_data_part->storage.lockSharedData(*new_data_part);
@ -1315,7 +1325,6 @@ bool MutateTask::prepare()
if (ctx->mutating_pipeline.initialized())
ctx->execute_ttl_type = MergeTreeDataMergerMutator::shouldExecuteTTL(ctx->metadata_snapshot, ctx->interpreter->getColumnDependencies());
/// All columns from part are changed and may be some more that were missing before in part
/// TODO We can materialize compact part without copying data
if (!isWidePart(ctx->source_part)
@ -1325,7 +1334,6 @@ bool MutateTask::prepare()
}
else /// TODO: check that we modify only non-key columns in this case.
{
/// We will modify only some of the columns. Other columns and key values can be copied as-is.
for (const auto & name_type : ctx->updated_header.getNamesAndTypesList())
ctx->updated_columns.emplace(name_type.name);

3
tests/queries/0_stateless/01780_column_sparse_alter.reference
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@ -5,3 +5,6 @@ u Sparse
id Default
t Sparse
182
id Default
t Sparse
182

7
tests/queries/0_stateless/01780_column_sparse_alter.sql
View File

@ -5,7 +5,6 @@ DROP TABLE IF EXISTS t_sparse_alter;
CREATE TABLE t_sparse_alter (id UInt64, u UInt64, s String)
ENGINE = MergeTree ORDER BY id
SETTINGS ratio_of_defaults_for_sparse_serialization = 0.5;
INSERT INTO t_sparse_alter SELECT
number,
if (number % 11 = 0, number, 0),
@ -23,4 +22,10 @@ SELECT column, serialization_kind FROM system.parts_columns WHERE database = cur
SELECT uniqExact(t) FROM t_sparse_alter;
DETACH TABLE t_sparse_alter;
ATTACH TABLE t_sparse_alter;
SELECT column, serialization_kind FROM system.parts_columns WHERE database = currentDatabase() AND table = 't_sparse_alter' AND active ORDER BY column;
SELECT uniqExact(t) FROM t_sparse_alter;
DROP TABLE t_sparse_alter;