Bug #42458 show global status like 'ndb%' - segv

• Submitted: 29 Jan 2009 16:22
• Modified: 31 Jan 2009 23:59
• Reporter: Tomas Ulin
• Status: Closed
• Category: MySQL Cluster: Cluster (NDB) storage engine
• Severity: S3 (Non-critical)
• Version: Cluster 6.2
• OS: Any
• Assigned to: Tomas Ulin
• CPU Architecture: Any

[29 Jan 2009 16:22] Tomas Ulin

Description:
if cluster is not connected (and has never been)

How to repeat:
.

[29 Jan 2009 16:24] Bugs System

A patch for this bug has been committed. After review, it may
be pushed to the relevant source trees for release in the next
version. You can access the patch from:

  http://lists.mysql.com/commits/64521

2803 Tomas Ulin	2009-01-29
      Bug #42458  show global status - segv

[29 Jan 2009 16:24] Bugs System

Pushed into 5.1.31-ndb-6.2.17 (revid:[e-mail]-20090129162404-vr19sz9h809563ul) (version source revid:[e-mail]-20090129162404-vr19sz9h809563ul) (merge vers: 5.1.31-ndb-6.2.17) (pib:6)

[29 Jan 2009 16:30] Bugs System

Pushed into 5.1.31-ndb-6.3.22 (revid:[e-mail]-20090129162742-0it6fawozo5qkoh3) (version source revid:[e-mail]-20090129162742-0it6fawozo5qkoh3) (merge vers: 5.1.31-ndb-6.3.22) (pib:6)

[29 Jan 2009 16:36] Bugs System

Pushed into 5.1.31-ndb-6.4.3 (revid:[e-mail]-20090129163431-5zg19hkg5eqzv7y3) (version source revid:[e-mail]-20090129163431-5zg19hkg5eqzv7y3) (merge vers: 5.1.31-ndb-6.4.3) (pib:6)

[31 Jan 2009 23:59] Jon Stephens

Documented bugfix in the NDB-6.2.17, 6.3.22, and 6.4.3 changelogs as follows:

        Issuing SHOW GLOBAL STATUS LIKE 'NDB%' before mysqld had
        connected to the cluster caused a segmentation fault.

[4 Feb 2009 10:42] Oli Sennhauser

Get the same with:

SELECT variable_value FROM information_schema.session_status WHERE variable_name LIKE 'NDB_EXECUTE_COUNT';

stack_bottom = 0xb488a210 thread_stack 0x30000
mysqld(my_print_stacktrace+0x2d) [0x85cddbd]
mysqld(handle_segfault+0x37f) [0x8243e6f]
[0xb7f39420]
mysqld(ha_ndbcluster::seize_thd_ndb()+0x2d) [0x83dc16d]
mysqld(check_ndb_in_thd(THD*, bool)+0x7b) [0x83dc23b]
mysqld [0x83dc287]
mysqld [0x836ebc7]
mysqld(fill_status(THD*, TABLE_LIST*, Item*)+0x9f) [0x836f01f]
mysqld(get_schema_tables_result(JOIN*, enum_schema_table_state)+0x1ce) [0x836301e]
mysqld(JOIN::exec()+0x455) [0x82c98d5]
mysqld(mysql_select(THD*, Item***, TABLE_LIST*, unsigned int, List<Item>&, Item*, unsigned int, st_order*, st_order*, Item*, st_order*, unsigned long long, select_result*, st_select_lex_unit*, st_select_lex*)+0x158) [0x82cbda8]
mysqld(handle_select(THD*, st_lex*, select_result*, unsigned long)+0x15d) [0x82cc70d]
mysqld [0x824f2c7]
mysqld(mysql_execute_command(THD*)+0x6348) [0x8259368]
mysqld(mysql_parse(THD*, char const*, unsigned int, char const**)+0x208) [0x825d598]
mysqld(dispatch_command(enum_server_command, THD*, char*, unsigned int)+0xf3c) [0x825e4dc]
mysqld(do_command(THD*)+0xe1) [0x825ebe1]
mysqld(handle_one_connection+0x5e4) [0x824c834]
/lib/libpthread.so.0 [0xb7f11fda]
/lib/libc.so.6(clone+0x5e) [0xb7d1f92e]
Trying to get some variables.
Some pointers may be invalid and cause the dump to abort...
thd->query at 0x8bd14c8 = SELECT variable_value    FROM information_schema.session_status   WHERE variable_name LIKE 'NDB_EXECUTE_COUNT'
thd->thread_id=4
thd->killed=NOT_KILLED

[10 Feb 2009 20:13] Bugs System

Pushed into 6.0.10-alpha (revid:[e-mail]-20090210194937-s7xshv5l3m1v7wi9) (version source revid:[e-mail]-20090129163531-z8ao7stcp6cjlxz4) (merge vers: 6.0.10-alpha) (pib:6)