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Bug #20358: InnoDB hang on the adaptive hash index latch in btr0sea.c

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Add --skip-innodb-adaptive-hash-index option, which is a way to
work around the bug (by disabling the adaptive hash feature entirely).

This may be useful even once the bug is fixed, for benchmarking purposes.
There are some workloads for which the adaptive hash index is not effective.
This commit is contained in:
tsmith@sita.local 2007-10-02 23:47:30 -06:00
parent ba419bdc8c
commit 0111438b45
4 changed files with 14 additions and 2 deletions
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3
sql/ha_innodb.cc
View File

@ -174,6 +174,7 @@ my_bool innobase_file_per_table = FALSE;
my_bool innobase_locks_unsafe_for_binlog = FALSE;
my_bool innobase_rollback_on_timeout = FALSE;
my_bool innobase_create_status_file = FALSE;
my_bool innobase_adaptive_hash_index = TRUE;
static char *internal_innobase_data_file_path = NULL;
@ -1376,6 +1377,8 @@ innobase_init(void)
srv_use_doublewrite_buf = (ibool) innobase_use_doublewrite;
srv_use_checksums = (ibool) innobase_use_checksums;
srv_use_adaptive_hash_indexes = (ibool) innobase_adaptive_hash_index;
os_use_large_pages = (ibool) innobase_use_large_pages;
os_large_page_size = (ulint) innobase_large_page_size;

3
sql/ha_innodb.h
View File

@ -217,7 +217,8 @@ extern my_bool innobase_log_archive,
innobase_use_native_aio,
innobase_file_per_table, innobase_locks_unsafe_for_binlog,
innobase_rollback_on_timeout,
innobase_create_status_file;
innobase_create_status_file,
innobase_adaptive_hash_index;
extern my_bool innobase_very_fast_shutdown; /* set this to 1 just before
calling innobase_end() if you want
InnoDB to shut down without

9
sql/mysqld.cc
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@ -4829,7 +4829,8 @@ enum options_mysqld
OPT_MERGE,
OPT_INNODB_ROLLBACK_ON_TIMEOUT,
OPT_SECURE_FILE_PRIV,
OPT_KEEP_FILES_ON_CREATE
OPT_KEEP_FILES_ON_CREATE,
OPT_INNODB_ADAPTIVE_HASH_INDEX
};
@ -5057,6 +5058,12 @@ Disable with --skip-innodb-checksums.", (gptr*) &innobase_use_checksums,
"The common part for InnoDB table spaces.", (gptr*) &innobase_data_home_dir,
(gptr*) &innobase_data_home_dir, 0, GET_STR, REQUIRED_ARG, 0, 0, 0, 0, 0,
0},
{"innodb_adaptive_hash_index", OPT_INNODB_ADAPTIVE_HASH_INDEX,
"Enable InnoDB adaptive hash index (enabled by default). "
"Disable with --skip-innodb-adaptive-hash-index.",
(gptr*) &innobase_adaptive_hash_index,
(gptr*) &innobase_adaptive_hash_index,
0, GET_BOOL, NO_ARG, 1, 0, 0, 0, 0, 0},
{"innodb_doublewrite", OPT_INNODB_DOUBLEWRITE, "Enable InnoDB doublewrite buffer (enabled by default). \
Disable with --skip-innodb-doublewrite.", (gptr*) &innobase_use_doublewrite,
(gptr*) &innobase_use_doublewrite, 0, GET_BOOL, NO_ARG, 1, 0, 0, 0, 0, 0},

1
sql/set_var.cc
View File

@ -901,6 +901,7 @@ struct show_var_st init_vars[]= {
{sys_innodb_concurrency_tickets.name, (char*) &sys_innodb_concurrency_tickets, SHOW_SYS},
{"innodb_data_file_path", (char*) &innobase_data_file_path, SHOW_CHAR_PTR},
{"innodb_data_home_dir", (char*) &innobase_data_home_dir, SHOW_CHAR_PTR},
{"innodb_adaptive_hash_index", (char*) &innobase_adaptive_hash_index, SHOW_MY_BOOL},
{"innodb_doublewrite", (char*) &innobase_use_doublewrite, SHOW_MY_BOOL},
{sys_innodb_fast_shutdown.name,(char*) &sys_innodb_fast_shutdown, SHOW_SYS},
{"innodb_file_io_threads", (char*) &innobase_file_io_threads, SHOW_LONG },