[Bugs] [Bug 1345718] New: warning messages seen in glusterd logs while setting the volume option

[bugzilla at redhat.com]

https://bugzilla.redhat.com/show_bug.cgi?id=1345718

            Bug ID: 1345718
           Summary: warning messages seen in glusterd logs while setting
                    the volume option
           Product: GlusterFS
           Version: mainline
         Component: glusterd
          Severity: low
          Assignee: bugs at gluster.org
          Reporter: sbairagy at redhat.com
                CC: amukherj at redhat.com, bugs at gluster.org,
                    rhinduja at redhat.com, sasundar at redhat.com
        Depends On: 1326183



+++ This bug was initially created as a clone of Bug #1326183 +++

Description of problem:
-----------------------
Noticed the warning messages in glusterd logs after setting an volume option.
The warning message is as follows :
<snip>
[2016-04-11 16:48:34.823961] W [dict.c:1452:dict_get_with_ref]
(-->/usr/lib64/glusterfs/3.7.9/xlator/mgmt/glusterd.so(build_shd_graph+0x69)
[0x7fdc0c3f3039] -->/lib64/libglusterfs.so.0(dict_get_str_boolean+0x32)
[0x7fdc17830fe2] -->/lib64/libglusterfs.so.0(+0x1eba6) [0x7fdc1782eba6] )
0-dict: dict OR key (graph-check) is NULL [Invalid argument]
[2016-04-11 16:48:34.824844] W [dict.c:1452:dict_get_with_ref]
(-->/usr/lib64/glusterfs/3.7.9/xlator/mgmt/glusterd.so(build_shd_graph+0x69)
[0x7fdc0c3f3039] -->/lib64/libglusterfs.so.0(dict_get_str_boolean+0x32)
[0x7fdc17830fe2] -->/lib64/libglusterfs.so.0(+0x1eba6) [0x7fdc1782eba6] )
0-dict: dict OR key (graph-check) is NULL [Invalid argument]

</snip> 


Version-Release number of selected component (if applicable):
-------------------------------------------------------------
RHGS 3.1.3 nightly build ( glusterfs-3.7.9-1.el7rhgs )

How reproducible:
------------------
consistent

Steps to Reproduce:
-------------------
1. Create any type of volume
2. Set any volume option on the volume
3. Observe glusterd logs

Actual results:
---------------
Warning messages seen in glusterd logs

Expected results:
-----------------
There shouldn't be any warning messages

--- Additional comment from SATHEESARAN on 2016-04-12 01:39:17 EDT ---

Below is the snip from Ravishankar ( AFR ) on this issue :

<snip>
Don't see any recent changes, but the builder (i.e. build_shd_graph()) is
dict-getting a "graph-check" key from mod_dict and I see many places in the
code where builders are launched via glusterd_create_global_volfile() with NULL
dicts. So maybe a null check for dict in build_shd_graph() is sufficient.
</snip>


Referenced Bugs:

https://bugzilla.redhat.com/show_bug.cgi?id=1326183
[Bug 1326183] warning messages seen in glusterd logs while setting the
volume option
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