Hello [email protected], Sai Hemanth Gantasala, Impala Public Jenkins,

I'd like you to reexamine a change. Please visit

    http://gerrit.cloudera.org:8080/22250

to look at the new patch set (#4).

Change subject: IMPALA-12785: Add commands to control event-processor status
......................................................................

IMPALA-12785: Add commands to control event-processor status

This patch extends the existing AdminFnStmt to support operations on
EventProcessor. E.g. to pause the EventProcessor:
  impala-shell> :event_processor('pause');
to resume the EventProcessor:
  impala-shell> :event_processor('start');
Or to resume the EventProcessor on a given event id (1000):
  impala-shell> :event_processor('start', 1000);
Admin can also resume the EventProcessor at the latest event id by using
-1:
  impala-shell> :event_processor('start', -1);

The command output will show the latest status of EventProcessor, e.g.
[localhost:21050] default> :event_processor('pause');
+--------------------------------------------------------------------------------+
| summary                                                                       
 |
+--------------------------------------------------------------------------------+
| EventProcessor status: PAUSED. LastSyncedEventId: 34489. LatestEventId: 
34489. |
+--------------------------------------------------------------------------------+
Fetched 1 row(s) in 0.01s

If authorization is enabled, only admin users that have ALL privilege on
SERVER can run this command.

Note that resuming EventProcessor back to a previous event id is only
allowed when it's not in the ACTIVE state. Resuming EventProcessor at a
newer event id can be done on any states. The restriction comes from the
existing codes of MetastoreEventsProcessor#start(long).

A new catalogd RPC, SetEventProcessorStatus, is added for coordinators
to control the status of EventProcessor.

Tests
 - Added e2e tests

Change-Id: I5a19f67264cfe06a1819a22c0c4f0cf174c9b958
---
M be/src/catalog/catalog-server.cc
M be/src/catalog/catalog-service-client-wrapper.h
M be/src/catalog/catalog.cc
M be/src/catalog/catalog.h
M be/src/exec/catalog-op-executor.cc
M be/src/exec/catalog-op-executor.h
M be/src/service/client-request-state.cc
M be/src/service/client-request-state.h
M common/thrift/CatalogService.thrift
M common/thrift/Frontend.thrift
M fe/src/main/java/org/apache/impala/analysis/AdminFnStmt.java
M fe/src/main/java/org/apache/impala/catalog/CatalogServiceCatalog.java
M 
fe/src/main/java/org/apache/impala/catalog/events/MetastoreEventsProcessor.java
M fe/src/main/java/org/apache/impala/service/JniCatalog.java
M tests/metadata/test_event_processing.py
15 files changed, 307 insertions(+), 15 deletions(-)


  git pull ssh://gerrit.cloudera.org:29418/Impala-ASF refs/changes/50/22250/4
--
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Gerrit-Project: Impala-ASF
Gerrit-Branch: master
Gerrit-MessageType: newpatchset
Gerrit-Change-Id: I5a19f67264cfe06a1819a22c0c4f0cf174c9b958
Gerrit-Change-Number: 22250
Gerrit-PatchSet: 4
Gerrit-Owner: Quanlong Huang <[email protected]>
Gerrit-Reviewer: Anonymous Coward <[email protected]>
Gerrit-Reviewer: Impala Public Jenkins <[email protected]>
Gerrit-Reviewer: Quanlong Huang <[email protected]>
Gerrit-Reviewer: Sai Hemanth Gantasala <[email protected]>

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