WebOct 4, 2014 · At the time of the invalid access, block->index for this block is already NULL. The problem is that we have two threads executing btr_search_drop_page_hash_index () for the same block in buf_page_mtr_lock () at the same time. While this occurred on a MDEV-15053 development branch, I believe that the same bug should be possible starting with … WebJan 15, 2015 · 2024-01-26T16:28:00.783095Z 0 [Warning] InnoDB: A long semaphore wait: --Thread 139915469956864 has waited at row0purge.cc line 861 for 241.00 seconds the semaphore: S-lock on RW-latch at 0x91e5458 created in file dict0dict.cc line 1184 a writer (thread id 139915280357120) has reserved it in mode exclusive number of readers …

Bug #75517 InnoDB: Warning: a long semaphore wait - followed …

WebOct 1, 2024 · In general, the steps to reproduce are: start server with innodb-page-size=32K or 64K; run some DDL/DML flow; shut down the server (clean shut down or crash, does not matter); WebApr 27, 2024 · First of all, FLUSH and other commands do have to set that field to 0. Also, the recommendation that you make on the recalculation of the statistics after 10 % of the rows are changed is not feasible. It would demand lots of … cyrus chan tennis

Long semaphore wait upon DROP DATABASE with XA holding locks …

Webdict0stats.cc File Reference Code used for calculating and manipulating table statistics. More... #include "my_dbug.h" #include < mysql_com.h > #include #include … WebJan 20, 2015 · -DBUILD_CONFIG=mysql_release -- Running cmake version 3.1.0 -- The C compiler identification is GNU 4.2.1 -- The CXX compiler identification is GNU 4.2.1 -- Checking whether C compiler has -isysroot -- Checking whether C compiler has -isysroot - yes -- Checking whether C compiler supports OSX deployment target flag -- Checking … WebSep 16, 2024 · The sampling algorithm (dict0stats.cc) used by ANALYZE for persistent statistics can not handle these one-row pages, and usually estimates n_diff as zero … cyrus brown\u0027s prayer