Jonathan Hurley created AMBARI-6219:
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Summary: Performance Issues When Parsing structured_output From
Agents
Key: AMBARI-6219
URL: https://issues.apache.org/jira/browse/AMBARI-6219
Project: Ambari
Issue Type: Bug
Affects Versions: 1.6.1
Environment: CentOS 6.4
Reporter: Jonathan Hurley
Assignee: Jonathan Hurley
Priority: Blocker
Fix For: 1.6.1
TaskResourceProvider.parseStructuredOutput(...) uses Jackson to parse the
structured_out of agent responses. In general, we should move to Gson and away
from Jackson globally.
However, because of the ambiguous nature of the responses, there is no
first-class object mapping for responses like java_home_check and
host_resolution_check. Gson, in turn, will convert integers to float when there
is no contract for it to map with. Jackson, although slower, will try to
determine if the numbers are integers or floats first.
There are two solutions; either provide mappings for the various responses in
structured_out so that Gson can correctly deserialize the JSON, or determine
why Jackson is so slow.
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