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http://review.cloudera.org/r/1039/
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Review request for hbase.
Summary
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This change allows the REST interface to publish its endpoint and metrics,
currently only requests/sec, into ZooKeeper. By default a permanent znode tree
is created as needed at /hbase/rest/status and Stargate instances create
ephemeral children of this with names in the format <host>:<port>. The
ephemeral znodes contain JSON serialized information about the instance, e.g.
{"connector":{"host":"restserver.example.com","port":"8080"},"statistics":{"requests":"13"}}
The function of Stargate itself is not affected, except for one significant
change: now if the ZooKeeper service is lost, the Stargate instances will abort
along with the rest of HBase.
This addresses bug HBASE-3119.
http://issues.apache.org/jira/browse/HBASE-3119
Diffs
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src/main/java/org/apache/hadoop/hbase/HConstants.java 71c3e7b
src/main/java/org/apache/hadoop/hbase/rest/Main.java 368b4b4
src/main/java/org/apache/hadoop/hbase/rest/RESTServlet.java ed92857
src/main/java/org/apache/hadoop/hbase/rest/metrics/RESTMetrics.java 284bbc5
Diff: http://review.cloudera.org/r/1039/diff
Testing
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Thanks,
Andrew
