Hi,
i am trying to install prestodb in hdp2.6.3.
i am getting error for presto worker install
error:
resource_management.core.exceptions.ExecutionFailed: Execution of 'export JAVA8_HOME=/usr/jdk64/jdk1.8.0_112 && rpm -i /tmp/presto-server-rpm-0.161.rpm' returned 1. package presto-server-rpm-0:0.161-1.x86_64 is already installed

steps followed for installing presto service:-
Steps:-
download ambari-presto-1.2.tar.gz
create directory PRESTO

mkdir /var/lib/ambari-server/resources/stacks/HDP/2.6/services/PRESTO

cd /var/lib/ambari-server/resources/stacks/HDP/2.6/services/PRESTO/

untar ambari-presto in recently created directory

tar -xvf ambari-presto-1.2.tar.gz -C /var/lib/ambari-server/resources/stacks/HDP/2.6/services/PRESTO/

move ambari-presto files in PRESTO/

mv /var/lib/ambari-server/resources/stacks/HDP/2.6/services/PRESTO/ambari-presto-1.2/* /var/lib/ambari-server/resources/stacks/HDP/2.6/services/PRESTO

remove ambari-presto

rm -rf /var/lib/ambari-server/resources/stacks/HDP/2.6/services/PRESTO/ambari-presto-1.2

chmod -R +x /var/lib/ambari-server/resources/stacks/HDP/2.6/services/PRESTO/*

change below files in configs

• /etc/ambari-server/conf/ambari.properties :-
  "agent.package.install.task.timeout=5000"
• even after this you may get a error regarding jdk version incompatibility
  https://docs.hortonworks.com/HDPDocuments/Ambari-2.6.0.0/bk_ambari-administration/content/ch_changing_the_jdk_version_on_an_existing_cluster.html
  steps followed to resolve this

ambari-server setup

select option to configure jdk and install jdk 1.8 update

ambari-server restart

login to ambari UI
Click on add service
select Presto click next
followed configurations as per https://prestodb.io/ambari-presto-service/getting-started.html
added :- - jvm.config add :- "-DHADOOP_USER_NAME=hive"

Error log for Presto worker install:-

Traceback (most recent call last):
File "/var/lib/ambari-agent/cache/stacks/HDP/2.6/services/PRESTO/package/scripts/presto_worker.py", line 74, in
Worker().execute()
File "/usr/lib/python2.6/site-packages/resource_management/libraries/script/script.py", line 367, in execute
method(env)
File "/var/lib/ambari-agent/cache/stacks/HDP/2.6/services/PRESTO/package/scripts/presto_worker.py", line 28, in install
Execute('export JAVA8_HOME={0} && rpm -i /tmp/{1}'.format(java_home, PRESTO_RPM_NAME))
File "/usr/lib/python2.6/site-packages/resource_management/core/base.py", line 166, in init
self.env.run()
File "/usr/lib/python2.6/site-packages/resource_management/core/environment.py", line 160, in run
self.run_action(resource, action)
File "/usr/lib/python2.6/site-packages/resource_management/core/environment.py", line 124, in run_action
provider_action()
File "/usr/lib/python2.6/site-packages/resource_management/core/providers/system.py", line 262, in action_run
tries=self.resource.tries, try_sleep=self.resource.try_sleep)
File "/usr/lib/python2.6/site-packages/resource_management/core/shell.py", line 72, in inner
result = function(command, **kwargs)
File "/usr/lib/python2.6/site-packages/resource_management/core/shell.py", line 102, in checked_call
tries=tries, try_sleep=try_sleep, timeout_kill_strategy=timeout_kill_strategy)
File "/usr/lib/python2.6/site-packages/resource_management/core/shell.py", line 150, in _call_wrapper
result = _call(command, **kwargs_copy)
File "/usr/lib/python2.6/site-packages/resource_management/core/shell.py", line 303, in _call
raise ExecutionFailed(err_msg, code, out, err)
resource_management.core.exceptions.ExecutionFailed: Execution of 'export JAVA8_HOME=/usr/jdk64/jdk1.8.0_112 && rpm -i /tmp/presto-server-rpm-0.161.rpm' returned 1. package presto-server-rpm-0:0.161-1.x86_64 is already installed

Thanks,
Sharda

you rpm is already installed
you can rpm -qa|grep "presto" to find which rpm you installed
then rpm -e YOU_RPM

from ambari-presto-service.