Github user paul-guo- commented on a diff in the pull request: https://github.com/apache/incubator-hawq/pull/1243#discussion_r118222840 --- Diff: src/backend/executor/nodeShareInputScan.c --- @@ -552,11 +551,59 @@ static void sisc_lockname(char* p, int size, int share_id, const char* name) } } + +char *joint_lock_file_name(ShareInput_Lk_Context *lk_ctxt, char *name) +{ + char *lock_file = palloc0(sizeof(char) * MAXPGPATH); + + if(strncmp("writer", name, 6) ==0 ) + { + strncat(lock_file, lk_ctxt->lkname_ready, strlen(lk_ctxt->lkname_ready)); --- End diff -- The strncat usage is not correct. It should be strncat(lock_file, lk_ctxt->lkname_ready, MAXPGPATH - strlen(lock_file) - 1); From the manpage. strncat(char *restrict s1, const char *restrict s2, size_t n); The strncat() function appends not more than n characters from s2, and then adds a terminating `\0'.
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