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Merge pull request #59946 from kitaisreal/replicated-merge-tree-alter-update-metadata-version-in-single-transaction

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ReplicatedMergeTree invalid metadata_version fix
This commit is contained in:
Alexey Milovidov 2024-02-15 04:38:06 +01:00 committed by GitHub
commit 009d08561d
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3 changed files with 63 additions and 5 deletions
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14
src/Storages/StorageReplicatedMergeTree.cpp
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@ -513,8 +513,15 @@ StorageReplicatedMergeTree::StorageReplicatedMergeTree(
if (same_structure)
{
Coordination::Stat metadata_stat;
current_zookeeper->get(zookeeper_path + "/metadata", &metadata_stat);
current_zookeeper->get(fs::path(zookeeper_path) / "metadata", &metadata_stat);
/** We change metadata_snapshot so that `createReplica` method will create `metadata_version` node in ZooKeeper
* with version of table '/metadata' node in Zookeeper.
*
* Otherwise `metadata_version` for not first replica will be initialized with 0 by default.
*/
setInMemoryMetadata(metadata_snapshot->withMetadataVersion(metadata_stat.version));
metadata_snapshot = getInMemoryMetadataPtr();
}
}
catch (Coordination::Exception & e)
@ -5817,6 +5824,7 @@ bool StorageReplicatedMergeTree::executeMetadataAlter(const StorageReplicatedMer
Coordination::Requests requests;
requests.emplace_back(zkutil::makeSetRequest(fs::path(replica_path) / "columns", entry.columns_str, -1));
requests.emplace_back(zkutil::makeSetRequest(fs::path(replica_path) / "metadata", entry.metadata_str, -1));
requests.emplace_back(zkutil::makeSetRequest(fs::path(replica_path) / "metadata_version", std::to_string(entry.alter_version), -1));
auto table_id = getStorageID();
auto alter_context = getContext();
@ -5863,10 +5871,6 @@ bool StorageReplicatedMergeTree::executeMetadataAlter(const StorageReplicatedMer
resetObjectColumnsFromActiveParts(parts_lock);
}
/// This transaction may not happen, but it's OK, because on the next retry we will eventually create/update this node
/// TODO Maybe do in in one transaction for Replicated database?
zookeeper->createOrUpdate(fs::path(replica_path) / "metadata_version", std::to_string(current_metadata->getMetadataVersion()), zkutil::CreateMode::Persistent);
return true;
}

14
tests/queries/0_stateless/02989_replicated_merge_tree_invalid_metadata_version.reference Normal file
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@ -0,0 +1,14 @@
Row 1:
──────
name: metadata
version: 1
--
Row 1:
──────
name: metadata_version
value: 1
--
id UInt64
value String
insert_time DateTime
insert_time_updated DateTime

40
tests/queries/0_stateless/02989_replicated_merge_tree_invalid_metadata_version.sql Normal file
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@ -0,0 +1,40 @@
-- Tags: zookeeper
DROP TABLE IF EXISTS test_table_replicated;
CREATE TABLE test_table_replicated
(
id UInt64,
value String
) ENGINE=ReplicatedMergeTree('/clickhouse/tables/{database}/test_table_replicated', '1_replica') ORDER BY id;
ALTER TABLE test_table_replicated ADD COLUMN insert_time DateTime;
SELECT name, version FROM system.zookeeper
WHERE path = '/clickhouse/tables/' || currentDatabase() ||'/test_table_replicated/'
AND name = 'metadata' FORMAT Vertical;
DROP TABLE IF EXISTS test_table_replicated_second;
CREATE TABLE test_table_replicated_second
(
id UInt64,
value String,
insert_time DateTime
) ENGINE=ReplicatedMergeTree('/clickhouse/tables/{database}/test_table_replicated', '2_replica') ORDER BY id;
DROP TABLE test_table_replicated;
SELECT '--';
SELECT name, value FROM system.zookeeper
WHERE path = '/clickhouse/tables/' || currentDatabase() ||'/test_table_replicated/replicas/2_replica'
AND name = 'metadata_version' FORMAT Vertical;
SYSTEM RESTART REPLICA test_table_replicated_second;
ALTER TABLE test_table_replicated_second ADD COLUMN insert_time_updated DateTime;
SELECT '--';
DESCRIBE test_table_replicated_second;
DROP TABLE test_table_replicated_second;