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Fix for bug #37756: enabling fulltext indexes with

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myisam_repair_threads > 1 causes crash

Problem: parallel repair (myisam_repair_threads > 1) of a myisam
table with two or more fulltext keys that use the same parser may
lead to a server crash. ALTER TABLE ENABLE KEYS is affected as well.

Fix: properly initialize fulltext structures for parallel repair.

Note: 1. there's no deterministic test case.
2. now we call parser->init() for each fulltext key
(not for each fulltext parser used).
This commit is contained in:
Ramil Kalimullin
2009-01-26 10:35:15 +04:00
parent 75342ddd34
commit 0151145310
6 changed files with 43 additions and 55 deletions
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2
include/myisam.h
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@@ -185,7 +185,7 @@ typedef struct st_mi_keydef /* Key definition with open & info */
uint16 maxlength; /* max length of (packed) key (auto) */
uint16 block_size_index; /* block_size (auto) */
uint32 version; /* For concurrent read/write */
uint32 ftparser_nr; /* distinct ftparser number */
uint32 ftkey_nr; /* full-text index number */
HA_KEYSEG *seg,*end;
struct st_mysql_ftparser *parser; /* Fulltext [pre]parser */