I've been trying to get my new mysql-5.0.18-servers running as slaves of our production systems to check if all our applications work fine with mysql 5 and to do some tests and tuning on the new servers.
The old servers are all P4s, 3GB RAM running debian-linux, 2.4-kernel and official mysql 4.1.13-standard-log binaries: d1 is the master, d2 and d3 are slaves. my new servers are dual-opterons, 6 GB RAM, running debian-linux with a 2.6.15-SMP-kernel, official mysql 5.0.18-max-log-binary. their names are d4 and d5. I am currently trying to get d4 running as a slave of d1. d5 should later become a slave of d4. The old servers only have myisam and memory-tables, innodb is disabled. The new ones had innodb and mysql-cluster enabled (datanodes running on the same servers, management-node running on d3) since I wanted to do some testing with the different engines, but I disabled both temporarily without any change in this weird problem:No matter if I do a copy of the /var/lib/mysql of d1 (and dump the contents of the memory-tables) while a "flush tables with read lock" is active and copy that to d4 (and doing a change master to... on d4 afterwards) or if I do a mysqldump --master-data=1:
The replication runs for maybe a minute or two and then hangs. "show slave status" says everything is OK but a replicated "replace" hangs in the processlist and nothing happens. CPU-load goes down to zero. Even after 2 hours nothing changed, a "slave stop" hangs, too, when I kill the replicated "replace"-process nothing happens and I can't stop the mysql server and have to kill it with "killall -9 mysqld" in the shell :( At first I thought this was a problem with a temporary table, but after having reloaded a new dump a few times I had the same problem with really simple inserts/updates like: A new dump, everything works for a few minutes, then this query hangs:| 4 | system user | | nachrichten | Connect | 11164 | update |replace into nachrichten.x_symbole (symbol,syscode,nachrichten_id) values('KUN','de','99949')
(taken directly from "show processlist") Info about the simple table: CREATE TABLE `x_symbole` ( `symbol` char(20) NOT NULL default '', `syscode` char(6) NOT NULL default '', `nachrichten_id` int(11) NOT NULL default '0', PRIMARY KEY (`symbol`,`syscode`,`nachrichten_id`), KEY `nachrichten_id` (`nachrichten_id`)) ENGINE=MyISAM DEFAULT CHARSET=latin1
I have to kill the mysqld with killall -9 mysqld, do a "mysqladmin shutdown" again and then restart mysql and issue the query in the mysql-shell: it works! Then I issue a "start slave", everything works again for a minute or two and hangs with some different query.I go nuts with this! I spent so much time with this problem and did not get any further and I have absolutely no idea what the problem is. nothing in the error log.
Can anybody suggest something that might help? I have no idea whats wrong!
regards
Jan
d4:
mysql> show variables;
+---------------------------------+------------------------------------------------------------------------+
| Variable_name | Value
|
+---------------------------------+------------------------------------------------------------------------+
| auto_increment_increment | 1
|
| auto_increment_offset | 1
|
| automatic_sp_privileges | ON
|
| back_log | 50
|
| basedir |
/usr/local/mysql-max-5.0.18-linux-x86_64-glibc23/ |
| binlog_cache_size | 32768
|
| bulk_insert_buffer_size | 15728640
|
| character_set_client | latin1
|
| character_set_connection | latin1
|
| character_set_database | latin1
|
| character_set_results | latin1
|
| character_set_server | latin1
|
| character_set_system | utf8
|
| character_sets_dir |
/usr/local/mysql-max-5.0.18-linux-x86_64-glibc23/share/mysql/charsets/ |
| collation_connection | latin1_swedish_ci
|
| collation_database | latin1_swedish_ci
|
| collation_server | latin1_swedish_ci
|
| completion_type | 0
|
| concurrent_insert | 1
|
| connect_timeout | 5
|
| datadir | /var/lib/mysql/
|
| date_format | %Y-%m-%d
|
| datetime_format | %Y-%m-%d %H:%i:%s
|
| default_week_format | 0
|
| delay_key_write | ON
|
| delayed_insert_limit | 100
|
| delayed_insert_timeout | 300
|
| delayed_queue_size | 1000
|
| div_precision_increment | 4
|
| engine_condition_pushdown | OFF
|
| expire_logs_days | 0
|
| flush | OFF
|
| flush_time | 0
|
| ft_boolean_syntax | + -><()~*:""&|
|
| ft_max_word_len | 84
|
| ft_min_word_len | 4
|
| ft_query_expansion_limit | 20
|
| ft_stopword_file | (built-in)
|
| group_concat_max_len | 1024
|
| have_archive | YES
|
| have_bdb | NO
|
| have_blackhole_engine | YES
|
| have_compress | YES
|
| have_crypt | YES
|
| have_csv | YES
|
| have_example_engine | YES
|
| have_federated_engine | YES
|
| have_geometry | YES
|
| have_innodb | YES
|
| have_isam | NO
|
| have_ndbcluster | YES
|
| have_openssl | NO
|
| have_query_cache | YES
|
| have_raid | NO
|
| have_rtree_keys | YES
|
| have_symlink | YES
|
| init_connect |
|
| init_file |
|
| init_slave |
|
| innodb_additional_mem_pool_size | 16777216
|
| innodb_autoextend_increment | 1000
|
| innodb_buffer_pool_awe_mem_mb | 0
|
| innodb_buffer_pool_size | 104857600
|
| innodb_checksums | ON
|
| innodb_commit_concurrency | 0
|
| innodb_concurrency_tickets | 500
|
| innodb_data_file_path | /var/lib/mysql/ibdata:20G:autoextend
|
| innodb_data_home_dir |
|
| innodb_doublewrite | ON
|
| innodb_fast_shutdown | 1
|
| innodb_file_io_threads | 4
|
| innodb_file_per_table | OFF
|
| innodb_flush_log_at_trx_commit | 0
|
| innodb_flush_method |
|
| innodb_force_recovery | 0
|
| innodb_lock_wait_timeout | 120
|
| innodb_locks_unsafe_for_binlog | OFF
|
| innodb_log_arch_dir | /var/lib/mysql/
|
| innodb_log_archive | OFF
|
| innodb_log_buffer_size | 33554432
|
| innodb_log_file_size | 268435456
|
| innodb_log_files_in_group | 3
|
| innodb_log_group_home_dir | /var/lib/mysql/
|
| innodb_max_dirty_pages_pct | 90
|
| innodb_max_purge_lag | 0
|
| innodb_mirrored_log_groups | 1
|
| innodb_open_files | 300
|
| innodb_support_xa | ON
|
| innodb_sync_spin_loops | 20
|
| innodb_table_locks | ON
|
| innodb_thread_concurrency | 16
|
| innodb_thread_sleep_delay | 10000
|
| interactive_timeout | 28800
|
| join_buffer_size | 16773120
|
| key_buffer_size | 314572800
|
| key_cache_age_threshold | 300
|
| key_cache_block_size | 1024
|
| key_cache_division_limit | 100
|
| language |
/usr/local/mysql-max-5.0.18-linux-x86_64-glibc23/share/mysql/english/ |
| large_files_support | ON
|
| large_page_size | 0
|
| large_pages | OFF
|
| license | GPL
|
| local_infile | ON
|
| locked_in_memory | OFF
|
| log | OFF
|
| log_bin | ON
|
| log_bin_trust_function_creators | OFF
|
| log_error |
|
| log_slave_updates | OFF
|
| log_slow_queries | ON
|
| log_warnings | 1
|
| long_query_time | 10
|
| low_priority_updates | OFF
|
| lower_case_file_system | OFF
|
| lower_case_table_names | 0
|
| max_allowed_packet | 16776192
|
| max_binlog_cache_size | 18446744073709551615
|
| max_binlog_size | 1073741824
|
| max_connect_errors | 10
|
| max_connections | 300
|
| max_delayed_threads | 20
|
| max_error_count | 64
|
| max_heap_table_size | 1048574976
|
| max_insert_delayed_threads | 20
|
| max_join_size | 18446744073709551615
|
| max_length_for_sort_data | 1024
|
| max_relay_log_size | 0
|
| max_seeks_for_key | 18446744073709551615
|
| max_sort_length | 1024
|
| max_sp_recursion_depth | 0
|
| max_tmp_tables | 32
|
| max_user_connections | 0
|
| max_write_lock_count | 18446744073709551615
|
| multi_range_count | 256
|
| myisam_data_pointer_size | 6
|
| myisam_max_sort_file_size | 9223372036854775807
|
| myisam_recover_options | OFF
|
| myisam_repair_threads | 1
|
| myisam_sort_buffer_size | 44040192
|
| myisam_stats_method | nulls_unequal
|
| ndb_autoincrement_prefetch_sz | 32
|
| ndb_force_send | ON
|
| ndb_use_exact_count | ON
|
| ndb_use_transactions | ON
|
| ndb_cache_check_time | 0
|
| net_buffer_length | 16384
|
| net_read_timeout | 30
|
| net_retry_count | 10
|
| net_write_timeout | 60
|
| new | OFF
|
| old_passwords | OFF
|
| open_files_limit | 1510
|
| optimizer_prune_level | 1
|
| optimizer_search_depth | 62
|
| pid_file | /var/lib/mysql/wpdb4.pid
|
| port | 3306
|
| preload_buffer_size | 32768
|
| protocol_version | 10
|
| query_alloc_block_size | 8192
|
| query_cache_limit | 1048576
|
| query_cache_min_res_unit | 4096
|
| query_cache_size | 100663296
|
| query_cache_type | ON
|
| query_cache_wlock_invalidate | OFF
|
| query_prealloc_size | 8192
|
| range_alloc_block_size | 2048
|
| read_buffer_size | 16773120
|
| read_only | OFF
|
| read_rnd_buffer_size | 10481664
|
| relay_log_purge | ON
|
| relay_log_space_limit | 0
|
| rpl_recovery_rank | 0
|
| secure_auth | OFF
|
| server_id | 21
|
| skip_external_locking | ON
|
| skip_networking | OFF
|
| skip_show_database | OFF
|
| slave_compressed_protocol | OFF
|
| slave_load_tmpdir | /tmp/
|
| slave_net_timeout | 3600
|
| slave_skip_errors | 1053,1160,1242
|
| slave_transaction_retries | 10
|
| slow_launch_time | 2
|
| socket | /var/run/mysqld/mysqld.sock
|
| sort_buffer_size | 67108856
|
| sql_mode |
|
| sql_notes | ON
|
| sql_warnings | ON
|
| storage_engine | MyISAM
|
| sync_binlog | 0
|
| sync_frm | ON
|
| sync_replication | 0
|
| sync_replication_slave_id | 0
|
| sync_replication_timeout | 10
|
| system_time_zone | CET
|
| table_cache | 512
|
| table_lock_wait_timeout | 50
|
| table_type | MyISAM
|
| thread_cache_size | 0
|
| thread_stack | 262144
|
| time_format | %H:%i:%s
|
| time_zone | SYSTEM
|
| timed_mutexes | OFF
|
| tmp_table_size | 33554432
|
| tmpdir | /tmp
|
| transaction_alloc_block_size | 8192
|
| transaction_prealloc_size | 4096
|
| tx_isolation | REPEATABLE-READ
|
| updatable_views_with_limit | YES
|
| version | 5.0.18-max-log
|
| version_comment | MySQL Community Edition - Experimental
(GPL) |
| version_compile_machine | x86_64
|
| version_compile_os | unknown-linux-gnu
|
| wait_timeout | 28800
|
+---------------------------------+------------------------------------------------------------------------+
215 rows in set (0.00 sec)
--
MySQL General Mailing List
For list archives: http://lists.mysql.com/mysql
To unsubscribe: http://lists.mysql.com/[EMAIL PROTECTED]
