[jira] [Commented] (AMBARI-13923) Ambari Blueprint deployment fails during HBase Client install: "TypeError: expected string or buffer"

["Amruta Borkar (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/AMBARI-13923?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15185649#comment-15185649 ] 

Amruta Borkar commented on AMBARI-13923:
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I also tried a blueprint similar to the one which was causing the error. But error was not reproduced and HBase client was installed properly in 2.2.0. There is no intention to fix it in older Ambari version 2.1.x . Uploaded the blueprint (erringblueprint.json) which caused this error. 

> Ambari Blueprint deployment fails during HBase Client install: "TypeError: expected string or buffer"
> -----------------------------------------------------------------------------------------------------
>
>                 Key: AMBARI-13923
>                 URL: https://issues.apache.org/jira/browse/AMBARI-13923
>             Project: Ambari
>          Issue Type: Bug
>          Components: ambari-server, blueprints, stacks
>    Affects Versions: 2.1.0
>         Environment: HDP 2.3
>            Reporter: Hari Sekhon
>            Assignee: Amruta Borkar
>            Priority: Critical
>             Fix For: 2.2.0
>
>         Attachments: AMBARI-13923-1.png, AMBARI-13923-2.png, erringblueprint.json
>
>
> When deploying a cluster using blueprints the install fails with the following exception:
> {code}
> Traceback (most recent call last):
>   File "/var/lib/ambari-agent/cache/common-services/HBASE/0.96.0.2.0/package/scripts/hbase_client.py", line 80, in <module>
>     HbaseClient().execute()
>   File "/usr/lib/python2.6/site-packages/resource_management/libraries/script/script.py", line 216, in execute
>     method(env)
>   File "/var/lib/ambari-agent/cache/common-services/HBASE/0.96.0.2.0/package/scripts/hbase_client.py", line 32, in install
>     import params
>   File "/var/lib/ambari-agent/cache/common-services/HBASE/0.96.0.2.0/package/scripts/params.py", line 26, in <module>
>     from params_linux import *
>   File "/var/lib/ambari-agent/cache/common-services/HBASE/0.96.0.2.0/package/scripts/params_linux.py", line 106, in <module>
>     regionserver_xmn_size = calc_xmn_from_xms(regionserver_heapsize, regionserver_xmn_percent, regionserver_xmn_max)
>   File "/var/lib/ambari-agent/cache/common-services/HBASE/0.96.0.2.0/package/scripts/functions.py", line 34, in calc_xmn_from_xms
>     heapsize = int(re.search('\d+',heapsize_str).group(0))
>   File "/usr/lib64/python2.7/re.py", line 142, in search
>     return _compile(pattern, flags).search(string)
> TypeError: expected string or buffer
> {code}
> There is a similar bug AMBARI-5066 but that one was resolved in Ambari 1.5 and this is Ambari 2.1
> Looking at the code it looks like it should be testing the heapsize_str variable is actually a string before passing it to re.search in /var/lib/ambari-agent/cache/common-services/HBASE/0.96.0.2.0/package/scripts/functions.py, or probably catch in an earlier calling method and raise the source issue to the user, ie "you forgot to enter a value for parameter X", or just set a default value if none is passed.



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