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40 lines
1.6 KiB
C++
40 lines
1.6 KiB
C++
#pragma once
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#include <Storages/MergeTree/MergeTreeData.h>
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namespace DB
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{
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class MergeTreePartChecker
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{
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public:
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struct Settings
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{
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bool verbose = false; /// Writes progress and errors to stderr, and does not stop at the first error.
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bool require_checksums = false; /// Requires column.txt to be.
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bool require_column_files = false; /// Requires that all columns from columns.txt have files.
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size_t index_granularity = 8192;
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Settings & setVerbose(bool verbose_) { verbose = verbose_; return *this; }
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Settings & setRequireChecksums(bool require_checksums_) { require_checksums = require_checksums_; return *this; }
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Settings & setRequireColumnFiles(bool require_column_files_) { require_column_files = require_column_files_; return *this; }
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Settings & setIndexGranularity(size_t index_granularity_) { index_granularity = index_granularity_; return *this; }
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};
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/** Completely checks the part data
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* - Calculates checksums and compares them with checksums.txt.
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* - For arrays and strings, checks the correspondence of the size and amount of data.
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* - Checks the correctness of marks.
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* Throws an exception if the part is corrupted or if the check fails (TODO: you can try to separate these cases).
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*/
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static void checkDataPart(
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String path,
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const Settings & settings,
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const DataTypes & primary_key_data_types, /// Check the primary key. If it is not necessary, pass an empty array.
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MergeTreeData::DataPart::Checksums * out_checksums = nullptr,
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std::atomic<bool> * is_cancelled = nullptr);
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};
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}
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