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MCOL-5522 Properly process pm join result count.

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This patch:
1. Properly processes situation when pm join result count is exceeded.
2. Adds session variable 'columnstore_max_pm_join_result_count` to control the limit.
This commit is contained in:
Denis Khalikov
2023-07-20 15:48:29 +03:00
committed by Leonid Fedorov
parent 9f15a0a9ac
commit 5f07828619
17 changed files with 195 additions and 102 deletions
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42
dbcon/mysql/ha_mcs_sysvars.cpp
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@ -39,8 +39,8 @@ static MYSQL_THDVAR_ENUM(compression_type, PLUGIN_VAR_RQCMDARG,
"SNAPPY segment files are Snappy compressed (default);"
#ifdef HAVE_LZ4
"LZ4 segment files are LZ4 compressed;",
# else
,
#else
,
#endif
NULL, // check
NULL, // update
@ -135,6 +135,10 @@ static MYSQL_THDVAR_ULONG(diskjoin_bucketsize, PLUGIN_VAR_RQCMDARG,
"The maximum size in MB of each 'small side' table in memory.", NULL, NULL, 100, 1,
~0U, 1);
static MYSQL_THDVAR_ULONG(max_pm_join_result_count, PLUGIN_VAR_RQCMDARG,
"The maximum size of the join result for the single block on BPP.", NULL, NULL,
1048576, 1, ~0U, 1);
static MYSQL_THDVAR_ULONG(um_mem_limit, PLUGIN_VAR_RQCMDARG,
"Per user Memory limit(MB). Switch to disk-based JOIN when limit is reached", NULL,
NULL, 0, 0, ~0U, 1);
@ -191,21 +195,21 @@ static MYSQL_THDVAR_ULONGLONG(cache_flush_threshold, PLUGIN_VAR_RQCMDARG,
"Threshold on the number of rows in the cache to trigger a flush", NULL, NULL,
500000, 1, 1000000000, 1);
static MYSQL_THDVAR_STR(cmapi_host, PLUGIN_VAR_NOCMDOPT|PLUGIN_VAR_MEMALLOC, "CMAPI host", NULL, NULL,
static MYSQL_THDVAR_STR(cmapi_host, PLUGIN_VAR_NOCMDOPT | PLUGIN_VAR_MEMALLOC, "CMAPI host", NULL, NULL,
"https://localhost");
static MYSQL_THDVAR_STR(cmapi_version, PLUGIN_VAR_NOCMDOPT|PLUGIN_VAR_MEMALLOC, "CMAPI version", NULL, NULL,
static MYSQL_THDVAR_STR(cmapi_version, PLUGIN_VAR_NOCMDOPT | PLUGIN_VAR_MEMALLOC, "CMAPI version", NULL, NULL,
"0.4.0");
static MYSQL_THDVAR_STR(cmapi_key, PLUGIN_VAR_NOCMDOPT|PLUGIN_VAR_MEMALLOC, "CMAPI key", NULL, NULL,
"");
static MYSQL_THDVAR_STR(cmapi_key, PLUGIN_VAR_NOCMDOPT | PLUGIN_VAR_MEMALLOC, "CMAPI key", NULL, NULL, "");
static MYSQL_THDVAR_ULONGLONG(cmapi_port, PLUGIN_VAR_NOCMDOPT, "CMAPI port", NULL,
NULL, 8640, 100, 65356, 1);
static MYSQL_THDVAR_ULONGLONG(cmapi_port, PLUGIN_VAR_NOCMDOPT, "CMAPI port", NULL, NULL, 8640, 100, 65356, 1);
static MYSQL_THDVAR_STR(s3_key, PLUGIN_VAR_NOCMDOPT|PLUGIN_VAR_MEMALLOC, "S3 Authentication Key ", NULL, NULL, "");
static MYSQL_THDVAR_STR(s3_secret, PLUGIN_VAR_NOCMDOPT|PLUGIN_VAR_MEMALLOC, "S3 Authentication Secret", NULL, NULL, "");
static MYSQL_THDVAR_STR(s3_region, PLUGIN_VAR_NOCMDOPT|PLUGIN_VAR_MEMALLOC, "S3 region", NULL, NULL, "");
static MYSQL_THDVAR_STR(s3_key, PLUGIN_VAR_NOCMDOPT | PLUGIN_VAR_MEMALLOC, "S3 Authentication Key ", NULL,
NULL, "");
static MYSQL_THDVAR_STR(s3_secret, PLUGIN_VAR_NOCMDOPT | PLUGIN_VAR_MEMALLOC, "S3 Authentication Secret",
NULL, NULL, "");
static MYSQL_THDVAR_STR(s3_region, PLUGIN_VAR_NOCMDOPT | PLUGIN_VAR_MEMALLOC, "S3 region", NULL, NULL, "");
st_mysql_sys_var* mcs_system_variables[] = {MYSQL_SYSVAR(compression_type),
MYSQL_SYSVAR(fe_conn_info_ptr),
@ -224,6 +228,7 @@ st_mysql_sys_var* mcs_system_variables[] = {MYSQL_SYSVAR(compression_type),
MYSQL_SYSVAR(diskjoin_smallsidelimit),
MYSQL_SYSVAR(diskjoin_largesidelimit),
MYSQL_SYSVAR(diskjoin_bucketsize),
MYSQL_SYSVAR(max_pm_join_result_count),
MYSQL_SYSVAR(um_mem_limit),
MYSQL_SYSVAR(double_for_decimal_math),
MYSQL_SYSVAR(decimal_overflow_check),
@ -256,8 +261,10 @@ void* get_fe_conn_info_ptr(THD* thd)
void set_fe_conn_info_ptr(void* ptr, THD* thd)
{
if (thd == NULL) thd = current_thd;
if (thd == NULL) return;
if (thd == NULL)
thd = current_thd;
if (thd == NULL)
return;
THDVAR(thd, fe_conn_info_ptr) = (uint64_t)(ptr);
}
@ -420,6 +427,15 @@ void set_diskjoin_bucketsize(THD* thd, ulong value)
THDVAR(thd, diskjoin_bucketsize) = value;
}
ulong get_max_pm_join_result_count(THD* thd)
{
return (thd == NULL) ? 0 : THDVAR(thd, max_pm_join_result_count);
}
void set_max_pm_join_result_count(THD* thd, ulong value)
{
THDVAR(thd, max_pm_join_result_count) = value;
}
ulong get_um_mem_limit(THD* thd)
{
return (thd == NULL) ? 0 : THDVAR(thd, um_mem_limit);