[HBASE-20268] It takes more than 15 seconds to bring up hbase shell

• Type: Improvement
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: 2.0.0-alpha-4
• Component/s: shell
• Assignee: Mike Drob
• Reporter: Hua Xiang
• Created: 23/Mar/18 20:42
• Updated: 28/Mar/18 16:42

Description

On a hbase 2.0 based cluster, it takes more than 15 seconds to bring up hbase shell.

Output: 

 

 # [root@hsun-1 ~]# echo exit | time /usr/java/default/bin/java -jar /opt/cloudera/parcels/CDH/jars/jruby-complete-9.1.10.0.jar -S irb
 # Switch to inspect mode.
 # exit
 # 9.81user 0.30system 0:03.59elapsed 281%CPU (0avgtext+0avgdata 308672maxresident)k
 # 0inputs+776outputs (0major+79787minor)pagefaults 0swaps
 # 
 # [root@hsun-1 ~]# echo exit | time hbase shell
 # Java HotSpot(TM) 64-Bit Server VM warning: Using incremental CMS is deprecated and will likely be removed in a future release
 # HBase Shell
 # Use "help" to get list of supported commands.
 # Use "exit" to quit this interactive shell.
 # Version 2.0.0-cdh6.0.x-SNAPSHOT, rUnknown, Thu Mar 22 12:30:22 PDT 2018
 # Took 0.0040 seconds
 # exit
 # 33.92user 1.20system 0:15.21elapsed 230%CPU (0avgtext+0avgdata 360928maxresident)k
 # 0inputs+1064outputs (0major+176658minor)pagefaults 0swaps