[HBASE-22425] Balance shell command broken in HBase-3.0.0

• Type: Bug
• Status: Closed
• Priority: Blocker
• Resolution: Fixed
• Affects Version/s: 3.0.0-alpha-1
• Fix Version/s: 3.0.0-alpha-1
• Component/s: shell
• Hadoop Flags: Reviewed
• Assignee: Zheng Hu
• Reporter: Zheng Hu
• Created: 15/May/19 12:37
• Updated: 01/Jul/22 21:44
• Resolved: 17/May/19 01:56

Description

Please see: https://issues.apache.org/jira/browse/HBASE-22387?focusedCommentId=16837386&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-16837386

hbase(main):001:0> balancer
(eval):3: warning: instance variable @shell not initialized
Exception `NoMethodError' at (eval):2 - undefined method `command' for nil:NilClass

ERROR: undefined method `command' for nil:NilClass
Backtrace: (eval):2:in `balancer'
           /home/huzheng/.minos/packages/hbase/7b5bccdecd0600d98ad9a28d826e289fb6d58f46-20190510-165336/hbase-3.0.0-SNAPSHOT/lib/ruby/hbase/admin.rb:192:in `balancer'
           /home/huzheng/.minos/packages/hbase/7b5bccdecd0600d98ad9a28d826e289fb6d58f46-20190510-165336/hbase-3.0.0-SNAPSHOT/lib/ruby/shell/commands/balancer.rb:47:in `command'
           /home/huzheng/.minos/packages/hbase/7b5bccdecd0600d98ad9a28d826e289fb6d58f46-20190510-165336/hbase-3.0.0-SNAPSHOT/lib/ruby/shell/commands.rb:49:in `block in command_safe'
           /home/huzheng/.minos/packages/hbase/7b5bccdecd0600d98ad9a28d826e289fb6d58f46-20190510-165336/hbase-3.0.0-SNAPSHOT/lib/ruby/shell/commands.rb:122:in `translate_hbase_exceptions'
           /home/huzheng/.minos/packages/hbase/7b5bccdecd0600d98ad9a28d826e289fb6d58f46-20190510-165336/hbase-3.0.0-SNAPSHOT/lib/ruby/shell/commands.rb:49:in `command_safe'
           /home/huzheng/.minos/packages/hbase/7b5bccdecd0600d98ad9a28d826e289fb6d58f46-20190510-165336/hbase-3.0.0-SNAPSHOT/lib/ruby/shell.rb:148:in `internal_command'
           /home/huzheng/.minos/packages/hbase/7b5bccdecd0600d98ad9a28d826e289fb6d58f46-20190510-165336/hbase-3.0.0-SNAPSHOT/lib/ruby/shell.rb:140:in `command'
           (eval):2:in `balancer'
           (hbase):1:in `<eval>'
           org/jruby/RubyKernel.java:994:in `eval'
           uri:classloader:/META-INF/jruby.home/lib/ruby/stdlib/irb/workspace.rb:87:in `evaluate'
           uri:classloader:/META-INF/jruby.home/lib/ruby/stdlib/irb/context.rb:380:in `evaluate'
           uri:classloader:/META-INF/jruby.home/lib/ruby/stdlib/irb.rb:489:in `block in eval_input'
           uri:classloader:/META-INF/jruby.home/lib/ruby/stdlib/irb.rb:623:in `signal_status'
           uri:classloader:/META-INF/jruby.home/lib/ruby/stdlib/irb.rb:486:in `block in eval_input'
           uri:classloader:/META-INF/jruby.home/lib/ruby/stdlib/irb/ruby-lex.rb:246:in `block in each_top_level_statement'
           org/jruby/RubyKernel.java:1292:in `loop'
           uri:classloader:/META-INF/jruby.home/lib/ruby/stdlib/irb/ruby-lex.rb:232:in `block in each_top_level_statement'
           org/jruby/RubyKernel.java:1114:in `catch'
           uri:classloader:/META-INF/jruby.home/lib/ruby/stdlib/irb/ruby-lex.rb:231:in `each_top_level_statement'
           uri:classloader:/META-INF/jruby.home/lib/ruby/stdlib/irb.rb:485:in `eval_input'
           /home/huzheng/.minos/packages/hbase/7b5bccdecd0600d98ad9a28d826e289fb6d58f46-20190510-165336/hbase-3.0.0-SNAPSHOT/bin/hirb.rb:214:in `block in start'
           org/jruby/RubyKernel.java:1114:in `catch'
           /home/huzheng/.minos/packages/hbase/7b5bccdecd0600d98ad9a28d826e289fb6d58f46-20190510-165336/hbase-3.0.0-SNAPSHOT/bin/hirb.rb:213:in `start'
           /home/huzheng/.minos/packages/hbase/7b5bccdecd0600d98ad9a28d826e289fb6d58f46-20190510-165336/hbase-3.0.0-SNAPSHOT/bin/hirb.rb:219:in `<main>'

For usage try 'help "balancer"'

Took 0.1378 seconds                                                                                                                                                               
hbase(main):002:0>

Issue Links

• relates to: HBASE-22387 Evaluate the get/scan performance after reading HFile block into offheap directly
• relates to: HBASE-22002 Remove the deprecated methods in Admin interface