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MDEV-17845 Extreme high open file limit used

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SHOW STATUS LIKE 'Open_files' was showing 18446744073709551615

my_file_opened used statistic_increment/statistic_decrement,
so one-off errors were normal and expected. But they confused
monitoring tools, so let's move my_file_opened to use atomics.
This commit is contained in:
Sergei Golubchik
2019-05-04 13:11:25 +02:00
parent 3d7e06d4ab
commit 15c79c41e4
8 changed files with 36 additions and 35 deletions
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sql/mysqld.cc
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@@ -8630,7 +8630,7 @@ SHOW_VAR status_vars[]= {
{"Memory_used", (char*) &show_memory_used, SHOW_SIMPLE_FUNC},
{"Memory_used_initial", (char*) &start_memory_used, SHOW_LONGLONG},
{"Not_flushed_delayed_rows", (char*) &delayed_rows_in_use, SHOW_LONG_NOFLUSH},
{"Open_files", (char*) &my_file_opened, SHOW_LONG_NOFLUSH},
{"Open_files", (char*) &my_file_opened, SHOW_SINT},
{"Open_streams", (char*) &my_stream_opened, SHOW_LONG_NOFLUSH},
{"Open_table_definitions", (char*) &show_table_definitions, SHOW_SIMPLE_FUNC},
{"Open_tables", (char*) &show_open_tables, SHOW_SIMPLE_FUNC},