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MCOL-4912 This patch introduces Extent Map index to improve EM scaleability

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EM scaleability project has two parts: phase1 and phase2.
        This is phase1 that brings EM index to speed up(from O(n) down
        to the speed of boost::unordered_map) EM lookups looking for
        <dbroot, oid, partition> tuple to turn it into LBID,
        e.g. most bulk insertion meta info operations.
        The basis is boost::shared_managed_object where EMIndex is
        stored. Whilst it is not debug-friendly it allows to put a
        nested structs into shmem. EMIndex has 3 tiers. Top down description:
        vector of dbroots, map of oids to partition vectors, partition
        vectors that have EM indices.
        Separate EM methods now queries index before they do EM run.
        EMIndex has a separate shmem file with the fixed id
        MCS-shm-00060001.
This commit is contained in:
Roman Nozdrin
2022-03-30 08:57:05 +00:00
committed by Leonid Fedorov
parent fb3eaabd29
commit 4c26e4f960
25 changed files with 3498 additions and 459 deletions
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64
dbcon/mysql/ha_mcs_client_udfs.cpp
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@ -1,5 +1,5 @@
/* Copyright (C) 2014 InfiniDB, Inc.
Copyright (C) 2016 MariaDB Corporation
Copyright (C) 2016-2022 MariaDB Corporation
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
@ -52,6 +52,8 @@ extern "C"
const char* SetParmsPrelude = "Updated ";
const char* SetParmsError = "Invalid parameter: ";
const char* InvalidParmSize = "Invalid parameter size: Input value cannot be larger than ";
const char* MsgEMIndexSizeInitErrMsg = "mcs_emindex_size() takes no arguments";
const char* MsgEMIndexFreeInitErrMsg = "mcs_emindex_free() takes no arguments";
const size_t Plen = strlen(SetParmsPrelude);
const size_t Elen = strlen(SetParmsError);
@ -1156,4 +1158,64 @@ extern "C"
{
}
#ifdef _MSC_VER
__declspec(dllexport)
#endif
long long mcs_emindex_size(UDF_INIT* initid, UDF_ARGS* args, char* is_null, char* error)
{
DBRM dbrm;
return dbrm.EMIndexShmemSize();
}
#ifdef _MSC_VER
__declspec(dllexport)
#endif
my_bool mcs_emindex_size_init(UDF_INIT* initid, UDF_ARGS* args, char* message)
{
if (args->arg_count != 0)
{
strcpy(message, MsgEMIndexSizeInitErrMsg);
return 1;
}
return 0;
}
#ifdef _MSC_VER
__declspec(dllexport)
#endif
void mcs_emindex_size_deinit(UDF_INIT* initid)
{
}
#ifdef _MSC_VER
__declspec(dllexport)
#endif
long long mcs_emindex_free(UDF_INIT* initid, UDF_ARGS* args, char* is_null, char* error)
{
DBRM dbrm;
return dbrm.EMIndexShmemFree();
}
#ifdef _MSC_VER
__declspec(dllexport)
#endif
my_bool mcs_emindex_free_init(UDF_INIT* initid, UDF_ARGS* args, char* message)
{
if (args->arg_count != 0)
{
strcpy(message, MsgEMIndexFreeInitErrMsg);
return 1;
}
return 0;
}
#ifdef _MSC_VER
__declspec(dllexport)
#endif
void mcs_emindex_free_deinit(UDF_INIT* initid)
{
}
} // extern "C"