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The function log_free_check() is not supposed to be invoked while the caller is holding any InnoDB synchronization objects, such as buffer page latches, tablespace latches, index tree latches, or in this case, rseg->mutex (rseg->latch in 10.6 or later). A hang was reported in 10.6 where several threads were waiting for an rseg->latch that had been exclusively acquired in trx_purge_truncate_history(), which invoked log_free_check() inside trx_purge_truncate_rseg_history(). Because the threads that were waiting for the rseg->latch were holding exclusive latches on some index pages, log_free_check() was unable to advance the checkpoint because those index pages could not be written out. trx_purge_truncate_history(): Invoke log_free_check() before acquiring the rseg->mutex and invoking trx_purge_free_segment(). trx_purge_free_segment(): Do not invoke log_free_check() in order to avoid a deadlock. |
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| data | ||
| dict | ||
| eval | ||
| fil | ||
| fsp | ||
| fts | ||
| fut | ||
| gis | ||
| ha | ||
| handler | ||
| ibuf | ||
| include | ||
| lock | ||
| log | ||
| mem | ||
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| mysql-test/storage_engine | ||
| os | ||
| page | ||
| pars | ||
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| srv | ||
| sync | ||
| trx | ||
| unittest | ||
| ut | ||
| .clang-format-old | ||
| bzip2.cmake | ||
| CMakeLists.txt | ||
| compile-innodb | ||
| COPYING.Google | ||
| COPYING.Percona | ||
| lz4.cmake | ||
| lzma.cmake | ||
| lzo.cmake | ||
| snappy.cmake | ||