TT does not start due to backwards compatibility wrt. EventCounter
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Key: HADOOP-7577
URL: https://issues.apache.org/jira/browse/HADOOP-7577
Project: Hadoop Common
Issue Type: Bug
Components: metrics
Affects Versions: 0.22.0
Reporter: Joep Rottinghuis
Assignee: Joep Rottinghuis
Priority: Minor
Between metrics1 and mertrics2 EventCounter was moved from o.a.h.log to
o.a.h.metrics.jvm.
On 0.20-security a wrapper marked with @Deprecated was added back to o.a.h.log
for compatibility, the same wrapper exists on trunk, but no on 0.22.
Without it the TT will fail to start with a ClassNotFoundException.
Hive configuration also point to this class in the log4j.properties.
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