upgrade samba4-alpha11 to samba4-alpha14 ERROR

[hesam mohamadian]

hello ,  after i want to upgrade my samba4-alpha 11 to samba4-alpha14 my
output is like below :
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Traceback (most recent call last):
  File "./scripting/bin/upgradeprovision", line 1638, in <module>
    provision_logger)
  File "bin/python/samba/upgradehelpers.py", line 383, in newprovision
    ldap_dryrun_mode=None, useeadb=True)
  File "bin/python/samba/provision/__init__.py", line 1492, in provision
    sitename=sitename)
  File "bin/python/samba/provision/__init__.py", line 520, in guess_names
    *raise ProvisioningError("guess_names: Domain '%s' must not be equal to
short host name '%s'!" % (domain, netbiosname))
samba.provision.ProvisioningError: ProvisioningError: guess_names: Domain
'ITSDC' must not be equal to short host name 'ITSDC'!*
A transaction is still active in ldb context [0x9635430] on
/usr/local/samba/private/sam.ldb
A transaction is still active in ldb context [0x9684fa0] on
/usr/local/samba/private/idmap.ldb
A transaction is still active in ldb context [0xa5ca980] on
/usr/local/samba/private/secrets.ldb
A transaction is still active in ldb context [0xa30dcf0] on
/usr/local/samba/private/privilege.ldb
root at its:/usr/local/src/samba-4.0.0alpha14/source4#
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how can i change my hostname i change itsdc to its in /etc/hostname and
reboot but my problem is not solved