Zoltan Haindrich created YARN-6738:
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Summary: LevelDBCacheTimelineStore should reuse ObjectMapper
instances
Key: YARN-6738
URL: https://issues.apache.org/jira/browse/YARN-6738
Project: Hadoop YARN
Issue Type: Improvement
Components: timelineserver
Reporter: Zoltan Haindrich
Using TezUI sometimes times out...and the cause of it was that the query was
quite large; and the leveldb handler seems like recreates the {{ObjectMapper}}
for every read - this is unfortunate; since the ObjectMapper have to rescan the
class annotations which may take some time.
Keeping the objectmapper reduces the ATS call time from 17 seconds to 3 seconds
for me...which was enough to get my tez-ui working again :)
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