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https://issues.apache.org/jira/browse/HBASE-20270?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16451646#comment-16451646
 ] 

Hadoop QA commented on HBASE-20270:
-----------------------------------

| (x) *{color:red}-1 overall{color}* |
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|| Vote || Subsystem || Runtime || Comment ||
| {color:blue}0{color} | {color:blue} reexec {color} | {color:blue}  0m 
22s{color} | {color:blue} Docker mode activated. {color} |
|| || || || {color:brown} Prechecks {color} ||
| {color:green}+1{color} | {color:green} @author {color} | {color:green}  0m  
0s{color} | {color:green} The patch does not contain any @author tags. {color} |
| {color:green}+1{color} | {color:green} test4tests {color} | {color:green}  0m 
 0s{color} | {color:green} The patch appears to include 1 new or modified test 
files. {color} |
|| || || || {color:brown} master Compile Tests {color} ||
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green}  5m 
14s{color} | {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green}  0m 
10s{color} | {color:green} master passed {color} |
|| || || || {color:brown} Patch Compile Tests {color} ||
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green}  4m 
53s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} rubocop {color} | {color:green}  0m 
16s{color} | {color:green} The patch generated 0 new + 40 unchanged - 2 fixed = 
40 total (was 42) {color} |
| {color:red}-1{color} | {color:red} ruby-lint {color} | {color:red}  0m  
6s{color} | {color:red} The patch generated 8 new + 49 unchanged - 1 fixed = 57 
total (was 50) {color} |
| {color:green}+1{color} | {color:green} whitespace {color} | {color:green}  0m 
 0s{color} | {color:green} The patch has no whitespace issues. {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green}  0m  
9s{color} | {color:green} the patch passed {color} |
|| || || || {color:brown} Other Tests {color} ||
| {color:green}+1{color} | {color:green} unit {color} | {color:green}  9m  
0s{color} | {color:green} hbase-shell in the patch passed. {color} |
| {color:green}+1{color} | {color:green} asflicense {color} | {color:green}  0m 
 9s{color} | {color:green} The patch does not generate ASF License warnings. 
{color} |
| {color:black}{color} | {color:black} {color} | {color:black} 20m 44s{color} | 
{color:black} {color} |
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|| Subsystem || Report/Notes ||
| Docker | Client=17.05.0-ce Server=17.05.0-ce Image:yetus/hbase:d8b550f |
| JIRA Issue | HBASE-20270 |
| JIRA Patch URL | 
https://issues.apache.org/jira/secure/attachment/12920552/hbase-20270.master.006.patch
 |
| Optional Tests |  asflicense  javac  javadoc  unit  rubocop  ruby_lint  |
| uname | Linux 487441e54e35 3.13.0-137-generic #186-Ubuntu SMP Mon Dec 4 
19:09:19 UTC 2017 x86_64 GNU/Linux |
| Build tool | maven |
| Personality | 
/home/jenkins/jenkins-slave/workspace/PreCommit-HBASE-Build/component/dev-support/hbase-personality.sh
 |
| git revision | master / a8be3bb814 |
| maven | version: Apache Maven 3.5.3 
(3383c37e1f9e9b3bc3df5050c29c8aff9f295297; 2018-02-24T19:49:05Z) |
| Default Java | 1.8.0_162 |
| rubocop | v0.54.0 |
| ruby-lint | v2.3.1 |
| ruby-lint | 
https://builds.apache.org/job/PreCommit-HBASE-Build/12624/artifact/patchprocess/diff-patch-ruby-lint.txt
 |
|  Test Results | 
https://builds.apache.org/job/PreCommit-HBASE-Build/12624/testReport/ |
| Max. process+thread count | 2385 (vs. ulimit of 10000) |
| modules | C: hbase-shell U: hbase-shell |
| Console output | 
https://builds.apache.org/job/PreCommit-HBASE-Build/12624/console |
| Powered by | Apache Yetus 0.7.0   http://yetus.apache.org |


This message was automatically generated.



> Turn off command help that follows all errors in shell
> ------------------------------------------------------
>
>                 Key: HBASE-20270
>                 URL: https://issues.apache.org/jira/browse/HBASE-20270
>             Project: HBase
>          Issue Type: Task
>          Components: shell
>    Affects Versions: 2.0.0
>            Reporter: Sean Busbey
>            Assignee: Sakthi
>            Priority: Major
>             Fix For: 2.0.0
>
>         Attachments: hbase-20270.master.001.patch, 
> hbase-20270.master.002.patch, hbase-20270.master.003.patch, 
> hbase-20270.master.004.patch, hbase-20270.master.005.patch, 
> hbase-20270.master.006.patch
>
>
> Right now if a shell command gives an error, any error, it then echos the 
> command help. It makes it harder to see the actual error text and is annoying.
> example:
> {code}
>                                                                               
>                                                                               
>                            
> hbase(main):007:0> create 'test:a_table', 'family', { NUMREGIONS => 20, 
> SPLITALGO => 'HexStringSplit'}
> ERROR: Unknown namespace test!
> Creates a table. Pass a table name, and a set of column family
> specifications (at least one), and, optionally, table configuration.
> Column specification can be a simple string (name), or a dictionary
> (dictionaries are described below in main help output), necessarily
> including NAME attribute.
> Examples:
> Create a table with namespace=ns1 and table qualifier=t1
>   hbase> create 'ns1:t1', {NAME => 'f1', VERSIONS => 5}
> Create a table with namespace=default and table qualifier=t1
>   hbase> create 't1', {NAME => 'f1'}, {NAME => 'f2'}, {NAME => 'f3'}
>   hbase> # The above in shorthand would be the following:
>   hbase> create 't1', 'f1', 'f2', 'f3'
>   hbase> create 't1', {NAME => 'f1', VERSIONS => 1, TTL => 2592000, 
> BLOCKCACHE => true}
>   hbase> create 't1', {NAME => 'f1', CONFIGURATION => 
> {'hbase.hstore.blockingStoreFiles' => '10'}}
>   hbase> create 't1', {NAME => 'f1', IS_MOB => true, MOB_THRESHOLD => 
> 1000000, MOB_COMPACT_PARTITION_POLICY => 'weekly'}
> Table configuration options can be put at the end.
> Examples:
>   hbase> create 'ns1:t1', 'f1', SPLITS => ['10', '20', '30', '40']
>   hbase> create 't1', 'f1', SPLITS => ['10', '20', '30', '40']
>   hbase> create 't1', 'f1', SPLITS_FILE => 'splits.txt', OWNER => 'johndoe'
>   hbase> create 't1', {NAME => 'f1', VERSIONS => 5}, METADATA => { 'mykey' => 
> 'myvalue' }
>   hbase> # Optionally pre-split the table into NUMREGIONS, using
>   hbase> # SPLITALGO ("HexStringSplit", "UniformSplit" or classname)
>   hbase> create 't1', 'f1', {NUMREGIONS => 15, SPLITALGO => 'HexStringSplit'}
>   hbase> create 't1', 'f1', {NUMREGIONS => 15, SPLITALGO => 'HexStringSplit', 
> REGION_REPLICATION => 2, CONFIGURATION => 
> {'hbase.hregion.scan.loadColumnFamiliesOnDemand' => 'true'}}
>   hbase> create 't1', {NAME => 'f1', DFS_REPLICATION => 1}
> You can also keep around a reference to the created table:
>   hbase> t1 = create 't1', 'f1'
> Which gives you a reference to the table named 't1', on which you can then
> call methods.
> Took 0.0221 seconds                                                           
>                                                                               
>                                                 
> hbase(main):008:0> create_namespace 'test'
> Took 0.2554 seconds                                                           
>                                                                               
>                                                 
> hbase(main):009:0> create 'test:a_table', 'family', { NUMREGIONS => 20, 
> SPLITALGO => 'HexStringSplit'}
> Created table test:a_table
> Took 1.2264 seconds                     
> {code}
> I was trying to make a table in the test namespace before making the 
> namespace. Much faster to recognize and move on when the error text isn't 
> followed by 80x the text.



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