[AMBARI-22558] Snapshot HBase task failed during IOP migration with TypeError

• Type: Bug
• Status: Resolved
• Priority: Blocker
• Resolution: Fixed
• Affects Version/s: 2.6.1
• Fix Version/s: 2.6.1
• Component/s: ambari-server
• Assignee: Dmitry Lysnichenko
• Reporter: Dmitry Lysnichenko
• Created: 30/Nov/17 11:42
• Updated: 30/Nov/17 21:55
• Resolved: 30/Nov/17 21:27

Description

STR

1. Deployed cluster with Ambari version: 2.2.0 and IOP version: 4.2.0.0
2. Upgrade Ambari to Target Version: 2.5.2.0-298 | Hash: 2453e16418fd964042452b649153dbe45f3c6009
3. Upgrade Ambari to Target Version: 2.6.1.0-64 | Hash: cd4db8e9ac0ea7ce14fc1253959a121688f34952
4. Register HDP-2.6.4.0-51 and call remove iop-select
5. Install the new HDP version bits and start Express Upgrade

Result
Snapshot HBase task failed with below error:

Traceback (most recent call last):
File "/var/lib/ambari-agent/cache/custom_actions/scripts/ru_execute_tasks.py", line 157, in <module>
ExecuteUpgradeTasks().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/custom_actions/scripts/ru_execute_tasks.py", line 153, in actionexecute
shell.checked_call(task.command, logoutput=True, quiet=True)
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 'source /var/lib/ambari-agent/ambari-env.sh ; /usr/bin/ambari-python-wrap /var/lib/ambari-agent/cache/stacks/BigInsights/4.2/services/HBASE/package/scripts/hbase_upgrade.py take_snapshot /var/lib/ambari-agent/data/command-404.json /var/lib/ambari-agent/cache/custom_actions /var/lib/ambari-agent/data/structured-out-404.json INFO /var/lib/ambari-agent/tmp' returned 1. 2017-11-29 07:01:50,049 - Stack Feature Version Info: Cluster Stack=2.6, Command Stack=None, Command Version=4.2.0.0, Upgrade Direction=upgrade -> 4.2.0.0
2017-11-29 07:01:50,096 - Using hadoop conf dir: /usr/hdp/current/hadoop-client/conf
Traceback (most recent call last):
File "/var/lib/ambari-agent/cache/stacks/BigInsights/4.2/services/HBASE/package/scripts/hbase_upgrade.py", line 37, in <module>
HbaseMasterUpgrade().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/BigInsights/4.2/services/HBASE/package/scripts/hbase_upgrade.py", line 28, in take_snapshot
import params
File "/var/lib/ambari-agent/cache/stacks/BigInsights/4.2/services/HBASE/package/scripts/params.py", line 107, in <module>
regionserver_xmn_percent = expect("/configurations/hbase-env/hbase_regionserver_xmn_ratio", float) #AMBARI-15614
TypeError: 'module' object is not callable

Upon checking the code here, the issue seems to be with import of 'expect' module

I tried the following changes in params.py:

L30: from resource_management.libraries.functions import expect
L107: regionserver_xmn_percent = expect.expect("/configurations/hbase-env/hbase_regionserver_xmn_ratio", float) #AMBARI-15614

Now the snapshot command ran fine:

2017-11-29 11:14:15,472 - Stack Feature Version Info: Cluster Stack=2.6, Command Stack=None, Command Version=4.2.0.0, Upgrade Direction=upgrade -> 4.2.0.0
2017-11-29 11:14:15,474 - Using hadoop conf dir: /usr/hdp/current/hadoop-client/conf
2017-11-29 11:14:15,476 - checked_call['hostid'] {}
2017-11-29 11:14:15,494 - checked_call returned (0, '16ace057')
2017-11-29 11:14:15,495 - Execute[' echo 'snapshot_all' | /usr/iop/current/hbase-client/bin/hbase shell'] {'user': 'hbase'}

Issue Links

• links to: review_request_