Details
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Bug
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Status: Closed (View Workflow)
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Critical
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Resolution: Fixed
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10.6, 10.11, 11.0, 11.1, 11.2, 11.3, 11.4
Description
The test encryption.innochecksum very often hangs, timing out in 900 seconds (15 minutes). I found it while working on MDEV-29445, but I see that the test fails also in other branches. The following (refining something that was modified in MDEV-33053) would fix the hang for me:
diff --git a/storage/innobase/buf/buf0lru.cc b/storage/innobase/buf/buf0lru.cc
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index 5ecaa513f41..fa833d96476 100644
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--- a/storage/innobase/buf/buf0lru.cc
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+++ b/storage/innobase/buf/buf0lru.cc
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@@ -449,24 +449,18 @@ buf_block_t *buf_LRU_get_free_block(bool have_mutex)
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goto got_block;
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}
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const bool wake = buf_pool.need_LRU_eviction();
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- mysql_mutex_unlock(&buf_pool.mutex);
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mysql_mutex_lock(&buf_pool.flush_list_mutex);
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- const auto n_flush = buf_pool.n_flush();
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if (wake && !buf_pool.page_cleaner_active()) {
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buf_pool.page_cleaner_wakeup(true);
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}
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mysql_mutex_unlock(&buf_pool.flush_list_mutex);
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- mysql_mutex_lock(&buf_pool.mutex);
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- if (!n_flush) {
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- goto not_found;
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- }
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- if (!buf_pool.try_LRU_scan) {
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+ if (wake) {
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my_cond_wait(&buf_pool.done_free,
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&buf_pool.mutex.m_mutex);
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}
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}
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-not_found:
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+ IF_DBUG(not_found:,);
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if (n_iterations > 1) {
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MONITOR_INC( MONITOR_LRU_GET_FREE_WAITS );
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} |
It looks like this hang was introduced in MDEV-26827. The above fix would depend on the fix of MDEV-33053.
Attachments
Issue Links
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- Closed
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- relates to
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- Closed
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- Closed
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- Closed
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- mentioned in
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