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https://github.com/ClickHouse/ClickHouse.git
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4c391f8e99
* initial commit: add setting and stub * typo * added test stub * fix * wip merging new integration test and code proto * adding steps interpreters * adding firstly proposed solution (moving parts etc) * added checking zookeeper path existence * fixing the include * fixing and sorting includes * fixing outdated struct * fix the name * added ast ptr as level of indirection * fix ref * updating the changes * working on test stub * fix iterator -> reference * revert rocksdb submodule update * fixed show privileges test * updated the test stub * replaced rand() with thread_local_rng(), updated the tests updated the test fixed test config path test fix removed error messages fixed the test updated the test fixed string literal fixed literal typo: = * fixed the empty replica error message * updated the test and the code with logs * updated the possible test cases, updated * added the code/test milestone comments * updated the test (added more testcases) * replaced native assert with CH one * individual replicas recursive delete fix * updated the AS db.name AST * two small logging fixes * manually generated AST fixes * Updated the test, added the possible algo change * Some thoughts about optimizing the solution: ALTER MOVE PARTITION .. TO TABLE -> move to detached/ + ALTER ... ATTACH * fix * Removed the replica sync in test as it's invalid * Some test tweaks * tmp * Rewrote the algo by using the executeQuery instead of hand-crafting the ASTPtr. Two questions still active. * tr: logging active parts * Extracted the parts moving algo into a separate helper function * Fixed the test data and the queries slightly * Replaced query to system.parts to direct invocation, started building the test that breaks on various parts. * Added the case for tables when at least one replica is alive * Updated the test to test replicas restoration by detaching/attaching * Altered the test to check restoration without replica restart * Added the tables swap in the start if the server failed last time * Hotfix when only /replicas/replica... path was deleted * Restore ZK paths while creating a replicated MergeTree table * Updated the docs, fixed the algo for individual replicas restoration case * Initial parts table storage fix, tests sync fix * Reverted individual replica restoration to general algo * Slightly optimised getDataParts * Trying another solution with parts detaching * Rewrote algo without any steps, added ON CLUSTER support * Attaching parts from other replica on restoration * Getting part checksums from ZK * Removed ON CLUSTER, finished working solution * Multiple small changes after review * Fixing parallel test * Supporting rewritten form on cluster * Test fix * Moar logging * Using source replica as checksum provider * improve test, remove some code from parser * Trying solution with move to detached + forget * Moving all parts (not only Committed) to detached * Edited docs for RESTORE REPLICA * Re-merging * minor fixes Co-authored-by: Alexander Tokmakov <avtokmakov@yandex-team.ru>
68 lines
2.0 KiB
C++
68 lines
2.0 KiB
C++
#pragma once
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#include <Interpreters/IInterpreter.h>
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#include <Parsers/IAST_fwd.h>
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#include <Storages/IStorage_fwd.h>
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#include <Interpreters/StorageID.h>
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#include <Common/ActionLock.h>
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#include <Disks/IVolume.h>
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namespace Poco { class Logger; }
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namespace DB
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{
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class Context;
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class AccessRightsElements;
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class ASTSystemQuery;
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/** Implement various SYSTEM queries.
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* Examples: SYSTEM SHUTDOWN, SYSTEM DROP MARK CACHE.
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*
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* Some commands are intended to stop/start background actions for tables and comes with two variants:
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*
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* 1. SYSTEM STOP MERGES table, SYSTEM START MERGES table
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* - start/stop actions for specific table.
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*
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* 2. SYSTEM STOP MERGES, SYSTEM START MERGES
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* - start/stop actions for all existing tables.
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* Note that the actions for tables that will be created after this query will not be affected.
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*/
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class InterpreterSystemQuery : public IInterpreter, WithMutableContext
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{
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public:
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InterpreterSystemQuery(const ASTPtr & query_ptr_, ContextMutablePtr context_);
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BlockIO execute() override;
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private:
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ASTPtr query_ptr;
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Poco::Logger * log = nullptr;
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StorageID table_id = StorageID::createEmpty(); /// Will be set up if query contains table name
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VolumePtr volume_ptr;
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/// Tries to get a replicated table and restart it
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/// Returns pointer to a newly created table if the restart was successful
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StoragePtr tryRestartReplica(const StorageID & replica, ContextMutablePtr context, bool need_ddl_guard = true);
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void restartReplicas(ContextMutablePtr system_context);
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void syncReplica(ASTSystemQuery & query);
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void restoreReplica();
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void dropReplica(ASTSystemQuery & query);
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bool dropReplicaImpl(ASTSystemQuery & query, const StoragePtr & table);
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void flushDistributed(ASTSystemQuery & query);
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void restartDisk(String & name);
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AccessRightsElements getRequiredAccessForDDLOnCluster() const;
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void startStopAction(StorageActionBlockType action_type, bool start);
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void extendQueryLogElemImpl(QueryLogElement &, const ASTPtr &, ContextPtr) const override;
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};
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}
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