hbase-shell/src/main/ruby/shell/commands/wal_roll_all.rb

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module Shell
  module Commands
    class WalRollAll < Command
      def help
        <<-EOF
Request all region servers to roll wal writer. Note that this method is synchronous,
which means it will block until all RegionServers have completed the log roll,
or a RegionServer fails due to an exception that retry will not work. Here is how
you would run the command in the hbase shell:
  hbase> wal_roll_all
EOF
      end

      def command
        admin.wal_roll_all
      end
    end
  end
end