logstash6.6.0-6.6.2版本使用jdbc input plugin时如果设置了jdbc_default_timezone，会报错：
{ 2012 rufus-scheduler intercepted an error:
2012 job:
2012 Rufus::Scheduler::CronJob "* * * * *" {}
2012 error:
2012 2012
2012 NoMethodError
2012 undefined method `utc_total_offset_rational' for #<TZInfo::TransitionsTimezonePeriod:0x78b60bbe>
Did you mean? utc_total_offset
2012 /data/logstash-6.6.2/vendor/bundle/jruby/2.3.0/gems/sequel-5.17.0/lib/sequel/extensions/named_timezones.rb:81:in `convert_output_datetime_other'
2012 /data/logstash-6.6.2/vendor/bundle/jruby/2.3.0/gems/sequel-5.17.0/lib/sequel/timezones.rb:54:in `convert_output_timestamp'
2012 /data/logstash-6.6.2/vendor/bundle/jruby/2.3.0/gems/sequel-5.17.0/lib/sequel/database/misc.rb:219:in `from_application_timestamp'
2012 /data/logstash-6.6.2/vendor/bundle/jruby/2.3.0/gems/sequel-5.17.0/lib/sequel/dataset/sql.rb:1058:in `format_timestamp'
2012 /data/logstash-6.6.2/vendor/bundle/jruby/2.3.0/gems/sequel-5.17.0/lib/sequel/dataset/sql.rb:1226:in `literal_datetime'
2012 /data/logstash-6.6.2/vendor/bundle/jruby/2.3.0/gems/sequel-5.17.0/lib/sequel/dataset/sql.rb:1231:in `literal_datetime_append'
2012 /data/logstash-6.6.2/vendor/bundle/jruby/2.3.0/gems/sequel-5.17.0/lib/sequel/dataset/sql.rb:105:in `literal_append'
2012 /data/logstash-6.6.2/vendor/bundle/jruby/2.3.0/gems/sequel-5.17.0/lib/sequel/dataset/sql.rb:602:in `placeholder_literal_string_sql_append'
2012 /data/logstash-6.6.2/vendor/bundle/jruby/2.3.0/gems/sequel-5.17.0/lib/sequel/sql.rb:112:in `to_s_append'
2012 /data/logstash-6.6.2/vendor/bundle/jruby/2.3.0/gems/sequel-5.17.0/lib/sequel/dataset/sql.rb:1236:in `literal_expression_append'
2012 /data/logstash-6.6.2/vendor/bundle/jruby/2.3.0/gems/sequel-5.17.0/lib/sequel/dataset/sql.rb:89:in `literal_append'
2012 /data/logstash-6.6.2/vendor/bundle/jruby/2.3.0/gems/sequel-5.17.0/lib/sequel/dataset/sql.rb:1571:in `static_sql'
2012 /data/logstash-6.6.2/vendor/bundle/jruby/2.3.0/gems/sequel-5.17.0/lib/sequel/dataset/sql.rb:236:in `select_sql'
2012 /data/logstash-6.6.2/vendor/bundle/jruby/2.3.0/gems/sequel-5.17.0/lib/sequel/dataset/sql.rb:147:in `sql'
2012 /data/logstash-6.6.2/vendor/bundle/jruby/2.3.0/gems/sequel-5.17.0/lib/sequel/dataset/sql.rb:1585:in `subselect_sql_append'
2012 /data/logstash-6.6.2/vendor/bundle/jruby/2.3.0/gems/sequel-5.17.0/lib/sequel/dataset/sql.rb:1211:in `literal_dataset_append'
2012 /data/logstash-6.6.2/vendor/bundle/jruby/2.3.0/gems/sequel-5.17.0/lib/sequel/dataset/sql.rb:109:in `literal_append'
2012 /data/logstash-6.6.2/vendor/bundle/jruby/2.3.0/gems/sequel-5.17.0/lib/sequel/dataset/sql.rb:271:in `aliased_expression_sql_append'
2012 /data/logstash-6.6.2/vendor/bundle/jruby/2.3.0/gems/sequel-5.17.0/lib/sequel/sql.rb:112:in `to_s_append'
2012 /data/logstash-6.6.2/vendor/bundle/jruby/2.3.0/gems/sequel-5.17.0/lib/sequel/dataset/sql.rb:1236:in `literal_expression_append'
2012 /data/logstash-6.6.2/vendor/bundle/jruby/2.3.0/gems/sequel-5.17.0/lib/sequel/dataset/sql.rb:89:in `literal_append'
2012 /data/logstash-6.6.2/vendor/bundle/jruby/2.3.0/gems/sequel-5.17.0/lib/sequel/dataset/sql.rb:1104:in `identifier_append'
2012 /data/logstash-6.6.2/vendor/bundle/jruby/2.3.0/gems/sequel-5.17.0/lib/sequel/dataset/sql.rb:1114:in `block in identifier_list_append'
2012 org/jruby/RubyArray.java:1734:in `each'
2012 /data/logstash-6.6.2/vendor/bundle/jruby/2.3.0/gems/sequel-5.17.0/lib/sequel/dataset/sql.rb:1112:in `identifier_list_append'
2012 /data/logstash-6.6.2/vendor/bundle/jruby/2.3.0/gems/sequel-5.17.0/lib/sequel/dataset/sql.rb:1542:in `source_list_append'
2012 /data/logstash-6.6.2/vendor/bundle/jruby/2.3.0/gems/sequel-5.17.0/lib/sequel/dataset/sql.rb:1395:in `select_from_sql'
2012 /data/logstash-6.6.2/vendor/bundle/jruby/2.3.0/gems/sequel-5.17.0/lib/sequel/dataset/sql.rb:244:in `select_sql'
2012 /data/logstash-6.6.2/vendor/bundle/jruby/2.3.0/gems/sequel-5.17.0/lib/sequel/dataset/actions.rb:729:in `single_value!'
2012 /data/logstash-6.6.2/vendor/bundle/jruby/2.3.0/gems/sequel-5.17.0/lib/sequel/dataset/actions.rb:110:in `count'
2012 /data/logstash-6.6.2/vendor/bundle/jruby/2.3.0/gems/sequel-5.17.0/lib/sequel/extensions/pagination.rb:58:in `each_page'
2012 /data/logstash-6.6.2/vendor/bundle/jruby/2.3.0/gems/logstash-input-jdbc-4.3.13/lib/logstash/plugin_mixins/jdbc/jdbc.rb:251:in `perform_query'
2012 /data/logstash-6.6.2/vendor/bundle/jruby/2.3.0/gems/logstash-input-jdbc-4.3.13/lib/logstash/plugin_mixins/jdbc/jdbc.rb:229:in `execute_statement'
2012 /data/logstash-6.6.2/vendor/bundle/jruby/2.3.0/gems/logstash-input-jdbc-4.3.13/lib/logstash/inputs/jdbc.rb:277:in `execute_query'
2012 /data/logstash-6.6.2/vendor/bundle/jruby/2.3.0/gems/logstash-input-jdbc-4.3.13/lib/logstash/inputs/jdbc.rb:258:in `block in run'
2012 /data/logstash-6.6.2/vendor/bundle/jruby/2.3.0/gems/rufus-scheduler-3.0.9/lib/rufus/scheduler/jobs.rb:234:in `do_call'
2012 /data/logstash-6.6.2/vendor/bundle/jruby/2.3.0/gems/rufus-scheduler-3.0.9/lib/rufus/scheduler/jobs.rb:258:in `do_trigger'
2012 /data/logstash-6.6.2/vendor/bundle/jruby/2.3.0/gems/rufus-scheduler-3.0.9/lib/rufus/scheduler/jobs.rb:300:in `block in start_work_thread'
2012 /data/logstash-6.6.2/vendor/bundle/jruby/2.3.0/gems/rufus-scheduler-3.0.9/lib/rufus/scheduler/jobs.rb:299:in `block in start_work_thread'
2012 org/jruby/RubyKernel.java:1292:in `loop'
2012 /data/logstash-6.6.2/vendor/bundle/jruby/2.3.0/gems/rufus-scheduler-3.0.9/lib/rufus/scheduler/jobs.rb:289:in `block in start_work_thread'
2012 tz:
2012 ENV['TZ']:
2012 Time.now: 2019-03-22 11:23:04 +0800
2012 scheduler:
2012 object_id: 2010
2012 opts:
2012 {:max_work_threads=>1}
2012 frequency: 0.3
2012 scheduler_lock: #<Rufus::Scheduler::NullLock:0x17bfc482>
2012 trigger_lock: #<Rufus::Scheduler::NullLock:0x6b986244>
2012 uptime: 63.011622 (1m3s13)
2012 down?: false
2012 threads: 2
2012 thread: #<Thread:0x5aaa15f6>
2012 thread_key: rufus_scheduler_2010
2012 work_threads: 1
2012 active: 1
2012 vacant: 0
2012 max_work_threads: 1
2012 mutexes: {}
2012 jobs: 1
2012 at_jobs: 0
2012 in_jobs: 0
2012 every_jobs: 0
2012 interval_jobs: 0
2012 cron_jobs: 1
2012 running_jobs: 1
2012 work_queue: 0这个bug是由于升级zinfo1.2.5->2.0.0导致的
$LOGSTASH_HOME/vendor/bundle/jruby/2.3.0/gems/tzinfo-2.0.0
预计会在下个版本修复，只能先降级到6.5.4版本；
参考：
https://github.com/logstash-plugins/logstash-input-jdbc/issues/325
来源：oschina
链接：https://my.oschina.net/u/4381494/blog/3602991