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Added comment to DiskMemory

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This commit is contained in:
Alexey Milovidov 2020-01-18 22:15:21 +03:00
parent 160b95e105
commit f9e1f25189
2 changed files with 11 additions and 8 deletions
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2
dbms/src/Disks/DiskMemory.cpp
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@ -10,8 +10,6 @@ namespace DB
{
namespace ErrorCodes
{
extern const int UNKNOWN_ELEMENT_IN_CONFIG;
extern const int EXCESSIVE_ELEMENT_IN_CONFIG;
extern const int FILE_DOESNT_EXIST;
extern const int FILE_ALREADY_EXISTS;
extern const int DIRECTORY_DOESNT_EXIST;

17
dbms/src/Disks/DiskMemory.h
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@ -1,19 +1,24 @@
#pragma once
#include <Disks/IDisk.h>
#include <IO/ReadBuffer.h>
#include <IO/WriteBuffer.h>
#include <mutex>
#include <memory>
#include <unordered_map>
namespace DB
{
namespace ErrorCodes
{
extern const int LOGICAL_ERROR;
}
class ReadBuffer;
class WriteBuffer;
/** Implementation of Disk intended only for testing purposes.
* All filesystem objects are stored in memory and lost on server restart.
*
* NOTE Work in progress. Currently the interface is not viable enough to support MergeTree or even StripeLog tables.
* Please delete this interface if it will not be finished after 2020-06-18.
*/
class DiskMemory : public IDisk
{
public: