[AMBARI-17816] Rebalance HDFS failed with "float division by zero"

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.4.0
• Fix Version/s: 2.4.0
• Component/s: ambari-server
• Assignee: Dmitry Lysnichenko
• Reporter: Dmitry Lysnichenko
• Created: 20/Jul/16 16:33
• Updated: 20/Jul/16 20:55
• Resolved: 20/Jul/16 16:49

Description

Rebalancing HDFS is failing with stderr :

Traceback (most recent call last):\n  File \"/var/lib/ambari-agent/cache/common-services/HDFS/2.1.0.2.0/package/scripts/namenode.py\", line 414, in <module>\n    NameNode().execute()\n  File \"/usr/lib/python2.6/site-packages/resource_management/libraries/script/script.py\", line 280, in execute\n    method(env)\n  File \"/var/lib/ambari-agent/cache/common-services/HDFS/2.1.0.2.0/package/scripts/namenode.py\", line 342, in rebalancehdfs\n    logoutput = False,\n  File \"/usr/lib/python2.6/site-packages/resource_management/core/base.py\", line 155, in __init__\n    self.env.run()\n  File \"/usr/lib/python2.6/site-packages/resource_management/core/environment.py\", line 160, in run\n    self.run_action(resource, action)\n  File \"/usr/lib/python2.6/site-packages/resource_management/core/environment.py\", line 124, in run_action\n    provider_action()\n  File \"/usr/lib/python2.6/site-packages/resource_management/core/providers/system.py\", line 273, in action_run\n    tries=self.resource.tries, try_sleep=self.resource.try_sleep)\n  File \"/usr/lib/python2.6/site-packages/resource_management/core/shell.py\", line 71, in inner\n    result = function(command, **kwargs)\n  File \"/usr/lib/python2.6/site-packages/resource_management/core/shell.py\", line 93, in checked_call\n    tries=tries, try_sleep=try_sleep)\n  File \"/usr/lib/python2.6/site-packages/resource_management/core/shell.py\", line 141, in _call_wrapper\n    result = _call(command, **kwargs_copy)\n  File \"/usr/lib/python2.6/site-packages/resource_management/core/shell.py\", line 265, in _call\n    raise Fail(err_msg)\nresource_management.core.exceptions.Fail: Caused by on_new_line function failed with exception for input argument '         0                  0 B                 0 B                0 B':\nTraceback (most recent call last):\n  File \"/usr/lib/python2.6/site-packages/resource_management/core/shell.py\", line 262, in _call\n    on_new_line(line, out_fd == proc.stderr)\n  File \"/var/lib/ambari-agent/cache/common-services/HDFS/2.1.0.2.0/package/scripts/namenode.py\", line 332, in handle_new_line\n    res['completePercent'] = calculateCompletePercent(parser.initialLine, pl)\n  File \"/var/lib/ambari-agent/cache/common-services/HDFS/2.1.0.2.0/package/scripts/namenode.py\", line 306, in calculateCompletePercent\n    return 1.0 - current.bytesLeftToMove/first.bytesLeftToMove\nZeroDivisionError: float division by zero

Issue Links

• links to: review_request_