Change in asterixdb[master]: [NO ISSUE][API] Add NC Query Cancellation API

[Murtadha Hubail (Code Review)]

Murtadha Hubail has submitted this change and it was merged.

Change subject: [NO ISSUE][API] Add NC Query Cancellation API
..


[NO ISSUE][API] Add NC Query Cancellation API

- user model changes: no
- storage format changes: no
- interface changes: no

Details:
- Introduce NCQueryCancellationServlet that uses NC<->CC
  messaging to cancel queries.

Change-Id: I75d326b6987ed87ccc4b58c171bd45cab33a4009
Reviewed-on: https://asterix-gerrit.ics.uci.edu/2103
Reviewed-by: Michael Blow 
Sonar-Qube: Jenkins 
Tested-by: Jenkins 
Contrib: Jenkins 
Integration-Tests: Jenkins 
---
A 
asterixdb/asterix-app/src/main/java/org/apache/asterix/api/http/server/NCQueryCancellationServlet.java
M 
asterixdb/asterix-app/src/main/java/org/apache/asterix/api/http/server/QueryCancellationServlet.java
2 files changed, 77 insertions(+), 1 deletion(-)

Approvals:
  Jenkins: Verified; No violations found; ; Verified
  Michael Blow: Looks good to me, approved

Objections:
  Anon. E. Moose #1000171: 



diff --git 
a/asterixdb/asterix-app/src/main/java/org/apache/asterix/api/http/server/NCQueryCancellationServlet.java
 
b/asterixdb/asterix-app/src/main/java/org/apache/asterix/api/http/server/NCQueryCancellationServlet.java
new file mode 100644
index 000..637c492
--- /dev/null
+++ 
b/asterixdb/asterix-app/src/main/java/org/apache/asterix/api/http/server/NCQueryCancellationServlet.java
@@ -0,0 +1,76 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+package org.apache.asterix.api.http.server;
+
+import static 
org.apache.asterix.app.message.ExecuteStatementRequestMessage.DEFAULT_NC_TIMEOUT_MILLIS;
+
+import java.io.IOException;
+import java.util.concurrent.ConcurrentMap;
+import java.util.concurrent.TimeUnit;
+import java.util.logging.Level;
+import java.util.logging.Logger;
+
+import org.apache.asterix.app.message.CancelQueryRequest;
+import org.apache.asterix.common.messaging.api.INCMessageBroker;
+import org.apache.asterix.common.messaging.api.MessageFuture;
+import org.apache.hyracks.api.application.INCServiceContext;
+import org.apache.hyracks.http.api.IServletRequest;
+import org.apache.hyracks.http.api.IServletResponse;
+
+import io.netty.handler.codec.http.HttpResponseStatus;
+
+/**
+ * The servlet provides a REST API on an NC for cancelling an on-going query.
+ */
+public class NCQueryCancellationServlet extends QueryCancellationServlet {
+private static final Logger LOGGER = 
Logger.getLogger(NCQueryCancellationServlet.class.getName());
+private final INCServiceContext serviceCtx;
+private final INCMessageBroker messageBroker;
+
+public NCQueryCancellationServlet(ConcurrentMap ctx, 
String... paths) {
+super(ctx, paths);
+this.serviceCtx = (INCServiceContext) 
ctx.get(ServletConstants.SERVICE_CONTEXT_ATTR);
+messageBroker = (INCMessageBroker) serviceCtx.getMessageBroker();
+}
+
+@Override
+protected void delete(IServletRequest request, IServletResponse response) 
throws IOException {
+// gets the parameter client_context_id from the request.
+String clientContextId = request.getParameter(CLIENT_CONTEXT_ID);
+if (clientContextId == null) {
+response.setStatus(HttpResponseStatus.BAD_REQUEST);
+return;
+}
+final MessageFuture cancelQueryFuture = 
messageBroker.registerMessageFuture();
+try {
+CancelQueryRequest cancelQueryMessage =
+new CancelQueryRequest(serviceCtx.getNodeId(), 
cancelQueryFuture.getFutureId(), clientContextId);
+messageBroker.sendMessageToCC(cancelQueryMessage);
+cancelQueryFuture.get(DEFAULT_NC_TIMEOUT_MILLIS, 
TimeUnit.MILLISECONDS);
+response.setStatus(HttpResponseStatus.OK);
+} catch (Exception e) {
+if (LOGGER.isLoggable(Level.SEVERE)) {
+LOGGER.log(Level.SEVERE, "Unexpected exception while canceling 
query", e);
+}
+

Change in asterixdb[master]: [NO ISSUE][API] Add NC Query Cancellation API

[Anon. E. Moose (Code Review)]

Anon. E. Moose #1000171 has posted comments on this change.

Change subject: [NO ISSUE][API] Add NC Query Cancellation API
..


Patch Set 3: Contrib-1

Analytics Compatibility Tests Failed Build 2831
: UNSTABLE

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Change in asterixdb[master]: [NO ISSUE][API] Add NC Query Cancellation API

[Jenkins (Code Review)]

Jenkins has posted comments on this change.

Change subject: [NO ISSUE][API] Add NC Query Cancellation API
..


Patch Set 3: Integration-Tests+1

Integration Tests Successful

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: SUCCESS

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Change in asterixdb[master]: [NO ISSUE][API] Add NC Query Cancellation API

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Change subject: [NO ISSUE][API] Add NC Query Cancellation API
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Patch Set 3: Contrib+1

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Change in asterixdb[master]: [NO ISSUE][API] Add NC Query Cancellation API

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Change subject: [NO ISSUE][API] Add NC Query Cancellation API
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Patch Set 3:

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Change in asterixdb[master]: [NO ISSUE][API] Add NC Query Cancellation API

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Change subject: [NO ISSUE][API] Add NC Query Cancellation API
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Change in asterixdb[master]: [NO ISSUE][API] Add NC Query Cancellation API

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Change in asterixdb[master]: [NO ISSUE][API] Add NC Query Cancellation API

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Change in asterixdb[master]: [NO ISSUE][API] Add NC Query Cancellation API

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Patch Set 2:

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Change in asterixdb[master]: [NO ISSUE][API] Add NC Query Cancellation API

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Change in asterixdb[master]: [NO ISSUE][API] Add NC Query Cancellation API

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Change in asterixdb[master]: [NO ISSUE][API] Add NC Query Cancellation API

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Patch Set 1: Contrib-1

Analytics Compatibility Tests Failed Build 2823
: UNSTABLE

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Change in asterixdb[master]: [NO ISSUE][API] Add NC Query Cancellation API

[Murtadha Hubail (Code Review)]

Hello Jenkins,

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

https://asterix-gerrit.ics.uci.edu/2103

to look at the new patch set (#2).

Change subject: [NO ISSUE][API] Add NC Query Cancellation API
..

[NO ISSUE][API] Add NC Query Cancellation API

- user model changes: no
- storage format changes: no
- interface changes: no

Details:
- Introduce NCQueryCancellationServlet that uses NC<->CC
  messaging to cancel queries.

Change-Id: I75d326b6987ed87ccc4b58c171bd45cab33a4009
---
A 
asterixdb/asterix-app/src/main/java/org/apache/asterix/api/http/server/NCQueryCancellationServlet.java
M 
asterixdb/asterix-app/src/main/java/org/apache/asterix/api/http/server/QueryCancellationServlet.java
2 files changed, 77 insertions(+), 1 deletion(-)


  git pull ssh://asterix-gerrit.ics.uci.edu:29418/asterixdb 
refs/changes/03/2103/2
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Change in asterixdb[master]: [NO ISSUE][API] Add NC Query Cancellation API

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Change subject: [NO ISSUE][API] Add NC Query Cancellation API
..


Patch Set 1: Integration-Tests+1

Integration Tests Successful

https://asterix-jenkins.ics.uci.edu/job/asterix-gerrit-integration-tests/4362/ 
: SUCCESS

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Change in asterixdb[master]: [NO ISSUE][API] Add NC Query Cancellation API

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Change subject: [NO ISSUE][API] Add NC Query Cancellation API
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Patch Set 1:

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Change in asterixdb[master]: [NO ISSUE][API] Add NC Query Cancellation API

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Change subject: [NO ISSUE][API] Add NC Query Cancellation API
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Patch Set 1:

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Change in asterixdb[master]: [NO ISSUE][API] Add NC Query Cancellation API

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Patch Set 1:

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Change in asterixdb[master]: [NO ISSUE][API] Add NC Query Cancellation API

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Change subject: [NO ISSUE][API] Add NC Query Cancellation API
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Change in asterixdb[master]: [NO ISSUE][API] Add NC Query Cancellation API

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Change subject: [NO ISSUE][API] Add NC Query Cancellation API
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Patch Set 1:

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Change in asterixdb[master]: [NO ISSUE][API] Add NC Query Cancellation API

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Build Started 
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Change in asterixdb[master]: [NO ISSUE][API] Add NC Query Cancellation API

[Murtadha Hubail (Code Review)]

Murtadha Hubail has uploaded a new change for review.

  https://asterix-gerrit.ics.uci.edu/2103

Change subject: [NO ISSUE][API] Add NC Query Cancellation API
..

[NO ISSUE][API] Add NC Query Cancellation API

- user model changes: no
- storage format changes: no
- interface changes: no

Details:
- Introduce NCQueryCancellationServlet that uses NC<->CC
  messaging to cancel queries.

Change-Id: I75d326b6987ed87ccc4b58c171bd45cab33a4009
---
A 
asterixdb/asterix-app/src/main/java/org/apache/asterix/api/http/server/NCQueryCancellationServlet.java
M 
asterixdb/asterix-app/src/main/java/org/apache/asterix/api/http/server/QueryCancellationServlet.java
2 files changed, 73 insertions(+), 1 deletion(-)


  git pull ssh://asterix-gerrit.ics.uci.edu:29418/asterixdb 
refs/changes/03/2103/1

diff --git 
a/asterixdb/asterix-app/src/main/java/org/apache/asterix/api/http/server/NCQueryCancellationServlet.java
 
b/asterixdb/asterix-app/src/main/java/org/apache/asterix/api/http/server/NCQueryCancellationServlet.java
new file mode 100644
index 000..191ef22
--- /dev/null
+++ 
b/asterixdb/asterix-app/src/main/java/org/apache/asterix/api/http/server/NCQueryCancellationServlet.java
@@ -0,0 +1,72 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+package org.apache.asterix.api.http.server;
+
+import java.io.IOException;
+import java.util.concurrent.ConcurrentMap;
+import java.util.logging.Level;
+import java.util.logging.Logger;
+
+import org.apache.asterix.app.message.CancelQueryRequest;
+import org.apache.asterix.common.messaging.api.INCMessageBroker;
+import org.apache.asterix.common.messaging.api.MessageFuture;
+import org.apache.hyracks.api.application.INCServiceContext;
+import org.apache.hyracks.http.api.IServletRequest;
+import org.apache.hyracks.http.api.IServletResponse;
+
+import io.netty.handler.codec.http.HttpResponseStatus;
+
+/**
+ * The servlet provides a REST API on an NC for cancelling an on-going query.
+ */
+public class NCQueryCancellationServlet extends QueryCancellationServlet {
+private static final Logger LOGGER = 
Logger.getLogger(NCQueryCancellationServlet.class.getName());
+private final INCServiceContext serviceCtx;
+private final INCMessageBroker messageBroker;
+
+public NCQueryCancellationServlet(ConcurrentMap ctx, 
String... paths) {
+super(ctx, paths);
+this.serviceCtx = (INCServiceContext) 
ctx.get(ServletConstants.SERVICE_CONTEXT_ATTR);
+messageBroker = (INCMessageBroker) serviceCtx.getMessageBroker();
+}
+
+@Override
+protected void delete(IServletRequest request, IServletResponse response) 
throws IOException {
+// gets the parameter client_context_id from the request.
+String clientContextId = request.getParameter(CLIENT_CONTEXT_ID);
+if (clientContextId == null) {
+response.setStatus(HttpResponseStatus.BAD_REQUEST);
+return;
+}
+final MessageFuture cancelQueryFuture = 
messageBroker.registerMessageFuture();
+try {
+CancelQueryRequest cancelQueryMessage =
+new CancelQueryRequest(serviceCtx.getNodeId(), 
cancelQueryFuture.getFutureId(), clientContextId);
+messageBroker.sendMessageToCC(cancelQueryMessage);
+response.setStatus(HttpResponseStatus.OK);
+} catch (Exception e) {
+if (LOGGER.isLoggable(Level.SEVERE)) {
+LOGGER.log(Level.SEVERE, "Unexpected exception while canceling 
query", e);
+}
+response.setStatus(HttpResponseStatus.INTERNAL_SERVER_ERROR);
+} finally {
+
messageBroker.deregisterMessageFuture(cancelQueryFuture.getFutureId());
+}
+}
+}
\ No newline at end of file
diff --git 
a/asterixdb/asterix-app/src/main/java/org/apache/asterix/api/http/server/QueryCancellationServlet.java
 
b/asterixdb/asterix-app/src/main/java/org/apache/asterix/api/http/server/QueryCancellationServlet.java
index 3f07151..96ff71c 100644
--- 
a/asterixdb/asterix-app/src/main/java/org/apache/asterix/api/http/server/QueryCancellationServlet.java
+++