Jiawei Wang has uploaded this change for review. ( 
http://gerrit.cloudera.org:8080/14600


Change subject: IMPALA-9109: Add top-k metadata loading ranking on catalogd UI
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IMPALA-9109: Add top-k metadata loading ranking on catalogd UI

Add functions in CatalogUsageMonitor to monitor and report the
catalog usage of the tables have the longest metadata loading
time. Add the sorted table in Catalog server web-ui. The loading
time is cacualted by the median from load_duration metrics.

Testing:
Launch Impala and activate some tables to see the table loading
time showed successfully on the catalog debug UI page.

Change-Id: I9305a867d7053cde9acc42dae6e47ee440f1a8bf
---
M be/src/catalog/catalog-server.cc
M be/src/catalog/catalog-server.h
M common/thrift/JniCatalog.thrift
M fe/src/main/java/org/apache/impala/catalog/CatalogServiceCatalog.java
M fe/src/main/java/org/apache/impala/catalog/CatalogUsageMonitor.java
M fe/src/main/java/org/apache/impala/catalog/HdfsTable.java
M fe/src/main/java/org/apache/impala/catalog/Table.java
M www/catalog.tmpl
8 files changed, 132 insertions(+), 13 deletions(-)



  git pull ssh://gerrit.cloudera.org:29418/Impala-ASF refs/changes/00/14600/2
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Gerrit-Project: Impala-ASF
Gerrit-Branch: master
Gerrit-MessageType: newchange
Gerrit-Change-Id: I9305a867d7053cde9acc42dae6e47ee440f1a8bf
Gerrit-Change-Number: 14600
Gerrit-PatchSet: 2
Gerrit-Owner: Jiawei Wang <jiawei.w...@cloudera.com>

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