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Reimplement FREEZE command.

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This commit is contained in:
Ivan Lezhankin 2018-11-01 13:35:50 +03:00
parent a837060454
commit 935615a647
18 changed files with 114 additions and 93 deletions
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1
.gitignore vendored
View File

@ -11,6 +11,7 @@
/build
/build_*
/build-*
/docs/build
/docs/edit
/docs/tools/venv/

4
dbms/src/Interpreters/InterpreterAlterQuery.cpp
View File

@ -85,10 +85,6 @@ BlockIO InterpreterAlterQuery::execute()
table->freezePartition(command.partition, command.with_name, context);
break;
case PartitionCommand::FREEZE_ALL:
table->freezeAll(command.with_name, context);
break;
case PartitionCommand::CLEAR_COLUMN:
table->clearColumnInPartition(command.partition, command.column_name, context);
break;

11
dbms/src/Storages/AlterCommands.cpp
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@ -91,6 +91,13 @@ std::optional<AlterCommand> AlterCommand::parse(const ASTAlterCommand * command_
command.primary_key = command_ast->primary_key;
return command;
}
else if (command_ast->type == ASTAlterCommand::FREEZE_ALL)
{
AlterCommand command;
command.type = AlterCommand::FREEZE_ALL;
command.with_name = command_ast->with_name;
return command;
}
else
return {};
}
@ -238,6 +245,10 @@ void AlterCommand::apply(ColumnsDescription & columns_description) const
/// This have no relation to changing the list of columns.
/// TODO Check that all columns exist, that only columns with constant defaults are added.
}
else if (type == FREEZE_ALL)
{
/// Do nothing with columns.
}
else
throw Exception("Wrong parameter type in ALTER query", ErrorCodes::LOGICAL_ERROR);
}

11
dbms/src/Storages/AlterCommands.h
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@ -12,13 +12,19 @@ namespace DB
class ASTAlterCommand;
/// Operation from the ALTER query (except for manipulation with PART/PARTITION). Adding Nested columns is not expanded to add individual columns.
/// Operation from the ALTER query (except for manipulation with PART/PARTITION).
/// Adding Nested columns is not expanded to add individual columns.
struct AlterCommand
{
enum Type
{
ADD_COLUMN,
DROP_COLUMN,
FREEZE_ALL,
// Even though this command operates on partitions, it needs global locks to prevent table alteration.
// It's vulnerable to the column modification commands.
MODIFY_COLUMN,
MODIFY_PRIMARY_KEY,
};
@ -30,6 +36,9 @@ struct AlterCommand
/// For DROP COLUMN ... FROM PARTITION
String partition_name;
/// For FREEZE of all partitions
String with_name;
/// For ADD and MODIFY, a new column type.
DataTypePtr data_type;

7
dbms/src/Storages/IStorage.h
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@ -278,13 +278,6 @@ public:
throw Exception("Method freezePartition is not supported by storage " + getName(), ErrorCodes::NOT_IMPLEMENTED);
}
/** Run the FREEZE request. That is, create a local backup (snapshot) of data using the `localBackup` function (see localBackup.h)
*/
virtual void freezeAll(const String & /*with_name*/, const Context & /*context*/)
{
throw Exception("Method freezeAll is not supported by storage " + getName(), ErrorCodes::NOT_IMPLEMENTED);
}
/** Perform any background work. For example, combining parts in a MergeTree type table.
* Returns whether any work has been done.
*/

70
dbms/src/Storages/MergeTree/MergeTreeData.cpp
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@ -1279,6 +1279,40 @@ MergeTreeData::AlterDataPartTransactionPtr MergeTreeData::alterDataPart(
return transaction;
}
void MergeTreeData::freezeAll(const String & with_name, const Context & context)
{
String clickhouse_path = Poco::Path(context.getPath()).makeAbsolute().toString();
String shadow_path = clickhouse_path + "shadow/";
Poco::File(shadow_path).createDirectories();
String backup_path = shadow_path
+ (!with_name.empty()
? escapeForFileName(with_name)
: toString(Increment(shadow_path + "increment.txt").get(true)))
+ "/";
LOG_DEBUG(log, "Snapshot will be placed at " + backup_path);
/// Acquire a snapshot of active data parts to prevent removing while doing backup.
const auto data_parts = getDataParts();
size_t parts_processed = 0;
for (const auto & part : data_parts)
{
LOG_DEBUG(log, "Freezing part " << part->name);
String part_absolute_path = Poco::Path(part->getFullPath()).absolute().toString();
if (!startsWith(part_absolute_path, clickhouse_path))
throw Exception("Part path " + part_absolute_path + " is not inside " + clickhouse_path, ErrorCodes::LOGICAL_ERROR);
String backup_part_absolute_path = part_absolute_path;
backup_part_absolute_path.replace(0, clickhouse_path.size(), backup_path);
localBackup(part_absolute_path, backup_part_absolute_path);
++parts_processed;
}
LOG_DEBUG(log, "Freezed " << parts_processed << " parts");
}
void MergeTreeData::AlterDataPartTransaction::commit()
{
if (!data_part)
@ -2104,42 +2138,6 @@ void MergeTreeData::freezePartition(const ASTPtr & partition_ast, const String &
LOG_DEBUG(log, "Freezed " << parts_processed << " parts");
}
void MergeTreeData::freezeAll(const String & with_name, const Context & context)
{
String clickhouse_path = Poco::Path(context.getPath()).makeAbsolute().toString();
String shadow_path = clickhouse_path + "shadow/";
Poco::File(shadow_path).createDirectories();
String backup_path = shadow_path
+ (!with_name.empty()
? escapeForFileName(with_name)
: toString(Increment(shadow_path + "increment.txt").get(true)))
+ "/";
LOG_DEBUG(log, "Snapshot will be placed at " + backup_path);
auto lock = lockStructureForAlter(__PRETTY_FUNCTION__);
/// Acquire a snapshot of active data parts to prevent removing while doing backup.
const auto data_parts = getDataParts();
size_t parts_processed = 0;
for (const auto & part : data_parts)
{
LOG_DEBUG(log, "Freezing part " << part->name);
String part_absolute_path = Poco::Path(part->getFullPath()).absolute().toString();
if (!startsWith(part_absolute_path, clickhouse_path))
throw Exception("Part path " + part_absolute_path + " is not inside " + clickhouse_path, ErrorCodes::LOGICAL_ERROR);
String backup_part_absolute_path = part_absolute_path;
backup_part_absolute_path.replace(0, clickhouse_path.size(), backup_path);
localBackup(part_absolute_path, backup_part_absolute_path);
++parts_processed;
}
LOG_DEBUG(log, "Freezed " << parts_processed << " parts");
}
size_t MergeTreeData::getPartitionSize(const std::string & partition_id) const
{
size_t size = 0;

9
dbms/src/Storages/MergeTree/MergeTreeData.h
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@ -480,6 +480,9 @@ public:
const ASTPtr & new_primary_key,
bool skip_sanity_checks);
/// Freezes all parts.
void freezeAll(const String & with_name, const Context & context);
/// Should be called if part data is suspected to be corrupted.
void reportBrokenPart(const String & name) const
{
@ -501,12 +504,6 @@ public:
*/
void freezePartition(const ASTPtr & partition, const String & with_name, const Context & context);
/** Create local backup (snapshot) for all parts.
* Backup is created in directory clickhouse_dir/shadow/i/, where i - incremental number,
* or if 'with_name' is specified - backup is created in directory with specified name.
*/
void freezeAll(const String & with_name, const Context & context);
/// Returns the size of partition in bytes.
size_t getPartitionSize(const std::string & partition_id) const;

7
dbms/src/Storages/PartitionCommands.cpp
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@ -58,13 +58,6 @@ std::optional<PartitionCommand> PartitionCommand::parse(const ASTAlterCommand *
res.with_name = command_ast->with_name;
return res;
}
else if (command_ast->type == ASTAlterCommand::FREEZE_ALL)
{
PartitionCommand res;
res.type = FREEZE_ALL;
res.with_name = command_ast->with_name;
return res;
}
else if (command_ast->type == ASTAlterCommand::DROP_COLUMN && command_ast->partition)
{
if (!command_ast->clear_column)

7
dbms/src/Storages/PartitionCommands.h
View File

@ -17,13 +17,12 @@ struct PartitionCommand
{
enum Type
{
DROP_PARTITION,
ATTACH_PARTITION,
REPLACE_PARTITION,
CLEAR_COLUMN,
DROP_PARTITION,
FETCH_PARTITION,
FREEZE_PARTITION,
FREEZE_ALL,
CLEAR_COLUMN,
REPLACE_PARTITION,
};
Type type;

6
dbms/src/Storages/StorageMaterializedView.cpp
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@ -263,12 +263,6 @@ void StorageMaterializedView::freezePartition(const ASTPtr & partition, const St
getTargetTable()->freezePartition(partition, with_name, context);
}
void StorageMaterializedView::freezeAll(const String & with_name, const Context & context)
{
checkStatementCanBeForwarded();
getTargetTable()->freezeAll(with_name, context);
}
void StorageMaterializedView::mutate(const MutationCommands & commands, const Context & context)
{
checkStatementCanBeForwarded();

1
dbms/src/Storages/StorageMaterializedView.h
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@ -39,7 +39,6 @@ public:
void clearColumnInPartition(const ASTPtr & partition, const Field & column_name, const Context & context) override;
void attachPartition(const ASTPtr & partition, bool part, const Context & context) override;
void freezePartition(const ASTPtr & partition, const String & with_name, const Context & context) override;
void freezeAll(const String & with_name, const Context & context) override;
void mutate(const MutationCommands & commands, const Context & context) override;
void shutdown() override;

14
dbms/src/Storages/StorageMergeTree.cpp
View File

@ -261,6 +261,15 @@ void StorageMergeTree::alter(
if (primary_key_is_modified)
data.loadDataParts(false);
/// Do freeze of all parts after all other operations.
for (const AlterCommand & param : params)
{
if (param.type == AlterCommand::FREEZE_ALL)
{
data.freezeAll(param.with_name, context);
}
}
}
@ -863,11 +872,6 @@ void StorageMergeTree::freezePartition(const ASTPtr & partition, const String &
data.freezePartition(partition, with_name, context);
}
void StorageMergeTree::freezeAll(const String & with_name, const Context & context)
{
data.freezeAll(with_name, context);
}
void StorageMergeTree::replacePartitionFrom(const StoragePtr & source_table, const ASTPtr & partition, bool replace, const Context & context)
{
auto lock1 = lockStructure(false, __PRETTY_FUNCTION__);

1
dbms/src/Storages/StorageMergeTree.h
View File

@ -71,7 +71,6 @@ public:
void attachPartition(const ASTPtr & partition, bool part, const Context & context) override;
void replacePartitionFrom(const StoragePtr & source_table, const ASTPtr & partition, bool replace, const Context & context) override;
void freezePartition(const ASTPtr & partition, const String & with_name, const Context & context) override;
void freezeAll(const String & with_name, const Context & context) override;
void mutate(const MutationCommands & commands, const Context & context) override;

6
dbms/src/Storages/StorageReplicatedMergeTree.cpp
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@ -4160,12 +4160,6 @@ void StorageReplicatedMergeTree::freezePartition(const ASTPtr & partition, const
}
void StorageReplicatedMergeTree::freezeAll(const String & with_name, const Context & context)
{
data.freezeAll(with_name, context);
}
void StorageReplicatedMergeTree::mutate(const MutationCommands & commands, const Context &)
{
/// Overview of the mutation algorithm.

1
dbms/src/Storages/StorageReplicatedMergeTree.h
View File

@ -122,7 +122,6 @@ public:
void replacePartitionFrom(const StoragePtr & source_table, const ASTPtr & partition, bool replace, const Context & context) override;
void fetchPartition(const ASTPtr & partition, const String & from, const Context & context) override;
void freezePartition(const ASTPtr & partition, const String & with_name, const Context & context) override;
void freezeAll(const String & with_name, const Context & context) override;
void mutate(const MutationCommands & commands, const Context & context) override;

2
dbms/tests/clickhouse-test
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@ -277,7 +277,7 @@ def main(args):
result_is_different = subprocess.call(['cmp', '-s', reference_file, stdout_file], stdout = PIPE)
if result_is_different:
(diff, _) = Popen(['diff', '--side-by-side', reference_file, stdout_file], stdout = PIPE).communicate()
(diff, _) = Popen(['diff', '-u', reference_file, stdout_file], stdout = PIPE).communicate()
diff = unicode(diff, errors='replace', encoding='utf-8')
failure = et.Element("failure", attrib = {"message": "result differs with reference"})

38
dbms/tests/queries/0_stateless/00428_partition.reference
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@ -1,6 +1,44 @@
5
5
55a54008ad1ba589aa210d2629c1df41 shadow/1/data/test/partition_428/19700201_19700201_1_1_0/primary.idx
88cdc31ded355e7572d68d8cde525d3a shadow/1/data/test/partition_428/19700201_19700201_1_1_0/p.bin
4ae71336e44bf9bf79d2752e234818a5 shadow/1/data/test/partition_428/19700201_19700201_1_1_0/p.mrk
e2af3bef1fd129aea73a890ede1e7a30 shadow/1/data/test/partition_428/19700201_19700201_1_1_0/k.bin
4ae71336e44bf9bf79d2752e234818a5 shadow/1/data/test/partition_428/19700201_19700201_1_1_0/k.mrk
082814b5aa5109160d5c0c5aff10d4df shadow/1/data/test/partition_428/19700201_19700201_1_1_0/v1.bin
4ae71336e44bf9bf79d2752e234818a5 shadow/1/data/test/partition_428/19700201_19700201_1_1_0/v1.mrk
77d5af402ada101574f4da114f242e02 shadow/1/data/test/partition_428/19700201_19700201_1_1_0/columns.txt
b01e3d4df40467db3f1c2d029f59f6a2 shadow/1/data/test/partition_428/19700201_19700201_1_1_0/checksums.txt
9e688c58a5487b8eaf69c9e1005ad0bf shadow/1/data/test/partition_428/19700102_19700102_2_2_0/primary.idx
cfcb770c3ecd0990dcceb1bde129e6c6 shadow/1/data/test/partition_428/19700102_19700102_2_2_0/p.bin
4ae71336e44bf9bf79d2752e234818a5 shadow/1/data/test/partition_428/19700102_19700102_2_2_0/p.mrk
082814b5aa5109160d5c0c5aff10d4df shadow/1/data/test/partition_428/19700102_19700102_2_2_0/k.bin
4ae71336e44bf9bf79d2752e234818a5 shadow/1/data/test/partition_428/19700102_19700102_2_2_0/k.mrk
38e62ff37e1e5064e9a3f605dfe09d13 shadow/1/data/test/partition_428/19700102_19700102_2_2_0/v1.bin
4ae71336e44bf9bf79d2752e234818a5 shadow/1/data/test/partition_428/19700102_19700102_2_2_0/v1.mrk
77d5af402ada101574f4da114f242e02 shadow/1/data/test/partition_428/19700102_19700102_2_2_0/columns.txt
e6654eba9e88b001280d3bdd21ccc417 shadow/1/data/test/partition_428/19700102_19700102_2_2_0/checksums.txt
b026324c6904b2a9cb4b88d6d61c81d1 shadow/increment.txt
5
5
55a54008ad1ba589aa210d2629c1df41 shadow/1/data/test/partition_428/19700201_19700201_1_1_0/primary.idx
88cdc31ded355e7572d68d8cde525d3a shadow/1/data/test/partition_428/19700201_19700201_1_1_0/p.bin
4ae71336e44bf9bf79d2752e234818a5 shadow/1/data/test/partition_428/19700201_19700201_1_1_0/p.mrk
e2af3bef1fd129aea73a890ede1e7a30 shadow/1/data/test/partition_428/19700201_19700201_1_1_0/k.bin
4ae71336e44bf9bf79d2752e234818a5 shadow/1/data/test/partition_428/19700201_19700201_1_1_0/k.mrk
082814b5aa5109160d5c0c5aff10d4df shadow/1/data/test/partition_428/19700201_19700201_1_1_0/v1.bin
4ae71336e44bf9bf79d2752e234818a5 shadow/1/data/test/partition_428/19700201_19700201_1_1_0/v1.mrk
77d5af402ada101574f4da114f242e02 shadow/1/data/test/partition_428/19700201_19700201_1_1_0/columns.txt
b01e3d4df40467db3f1c2d029f59f6a2 shadow/1/data/test/partition_428/19700201_19700201_1_1_0/checksums.txt
9e688c58a5487b8eaf69c9e1005ad0bf shadow/1/data/test/partition_428/19700102_19700102_2_2_0/primary.idx
cfcb770c3ecd0990dcceb1bde129e6c6 shadow/1/data/test/partition_428/19700102_19700102_2_2_0/p.bin
4ae71336e44bf9bf79d2752e234818a5 shadow/1/data/test/partition_428/19700102_19700102_2_2_0/p.mrk
082814b5aa5109160d5c0c5aff10d4df shadow/1/data/test/partition_428/19700102_19700102_2_2_0/k.bin
4ae71336e44bf9bf79d2752e234818a5 shadow/1/data/test/partition_428/19700102_19700102_2_2_0/k.mrk
38e62ff37e1e5064e9a3f605dfe09d13 shadow/1/data/test/partition_428/19700102_19700102_2_2_0/v1.bin
4ae71336e44bf9bf79d2752e234818a5 shadow/1/data/test/partition_428/19700102_19700102_2_2_0/v1.mrk
77d5af402ada101574f4da114f242e02 shadow/1/data/test/partition_428/19700102_19700102_2_2_0/columns.txt
e6654eba9e88b001280d3bdd21ccc417 shadow/1/data/test/partition_428/19700102_19700102_2_2_0/checksums.txt
b026324c6904b2a9cb4b88d6d61c81d1 shadow/increment.txt
31,1,2
1,2,3

11
dbms/tests/queries/0_stateless/00428_partition.sh
View File

@ -25,9 +25,8 @@ done
$chl "ALTER TABLE test.partition_428 FREEZE"
pushd
cd $chdir && find shadow -type f -exec md5sum {} \;
popd
# Do `cd` for consistent output for reference
cd $ch_dir && find shadow -type f -exec md5sum {} \;
$chl "ALTER TABLE test.partition_428 DETACH PARTITION 197001"
$chl "ALTER TABLE test.partition_428 ATTACH PARTITION 197001"
@ -40,10 +39,8 @@ done
$chl "ALTER TABLE test.partition_428 MODIFY COLUMN v1 Int8"
# Check that backup hasn't changed
pushd
cd $chdir && find shadow -type f -exec md5sum {} \;
popd
# Check the backup hasn't changed
cd $ch_dir && find shadow -type f -exec md5sum {} \;
$chl "OPTIMIZE TABLE test.partition_428"