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Posted to notifications@asterixdb.apache.org by "abdullah alamoudi (Code Review)" <do...@asterixdb.incubator.apache.org> on 2018/03/14 17:41:35 UTC

Change in asterixdb[master]: [NO ISSUE][OTH] Log open file count on unexpected HttpServer...

abdullah alamoudi has uploaded a new change for review.

  https://asterix-gerrit.ics.uci.edu/2483

Change subject: [NO ISSUE][OTH] Log open file count on unexpected HttpServer close
......................................................................

[NO ISSUE][OTH] Log open file count on unexpected HttpServer close

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

Details:
- Recently, there has been some cases where the Http server
  repeatedly drops its listener. One of the possible causes
  for this is a leak in open file descriptor. To determine if
  this is the case, we log the open files count when that happens.

Change-Id: Ie43f3392268b3994839d1f98f4de9fe669c7be62
---
M hyracks-fullstack/hyracks/hyracks-http/src/main/java/org/apache/hyracks/http/server/HttpServer.java
1 file changed, 11 insertions(+), 0 deletions(-)


  git pull ssh://asterix-gerrit.ics.uci.edu:29418/asterixdb refs/changes/83/2483/1

diff --git a/hyracks-fullstack/hyracks/hyracks-http/src/main/java/org/apache/hyracks/http/server/HttpServer.java b/hyracks-fullstack/hyracks/hyracks-http/src/main/java/org/apache/hyracks/http/server/HttpServer.java
index d971a7c..cab7dd8 100644
--- a/hyracks-fullstack/hyracks/hyracks-http/src/main/java/org/apache/hyracks/http/server/HttpServer.java
+++ b/hyracks-fullstack/hyracks/hyracks-http/src/main/java/org/apache/hyracks/http/server/HttpServer.java
@@ -18,6 +18,9 @@
  */
 package org.apache.hyracks.http.server;
 
+import java.lang.management.ManagementFactory;
+import java.lang.management.OperatingSystemMXBean;
+import java.lang.reflect.Method;
 import java.util.ArrayList;
 import java.util.Collections;
 import java.util.List;
@@ -251,6 +254,14 @@
                     return;
                 }
                 LOGGER.log(Level.WARN, "{} has stopped unexpectedly. Starting server recovery", this);
+                try {
+                    OperatingSystemMXBean os = ManagementFactory.getOperatingSystemMXBean();
+                    Method method = os.getClass().getMethod("getOpenFileDescriptorCount");
+                    Integer value = (Integer) method.invoke(os);
+                    LOGGER.log(Level.WARN, "Number of open files by this process is {} ", value);
+                } catch (Throwable th) {
+                    LOGGER.log(Level.WARN, "Failed getting the count of open files", th);
+                }
                 triggerRecovery();
             }
         });

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Change in asterixdb[master]: [NO ISSUE][OTH] Log open file count on unexpected HttpServer...

Posted by "Jenkins (Code Review)" <do...@asterixdb.incubator.apache.org>.

Jenkins has posted comments on this change.

Change subject: [NO ISSUE][OTH] Log open file count on unexpected HttpServer close
......................................................................


Patch Set 3:

Build Started https://asterix-jenkins.ics.uci.edu/job/asterix-gerrit-sonar/6990/ (12/12)

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Change in asterixdb[master]: [NO ISSUE][OTH] Log open file count on unexpected HttpServer...

Posted by "Jenkins (Code Review)" <do...@asterixdb.incubator.apache.org>.

Jenkins has posted comments on this change.

Change subject: [NO ISSUE][OTH] Log open file count on unexpected HttpServer close
......................................................................


Patch Set 5: Contrib+1

BAD Compatibility Tests Successful

https://asterix-jenkins.ics.uci.edu/job/asterixbad-compat/2888/ : SUCCESS

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Change in asterixdb[master]: [NO ISSUE][OTH] Log open file count on unexpected HttpServer...

Posted by "Jenkins (Code Review)" <do...@asterixdb.incubator.apache.org>.

Jenkins has posted comments on this change.

Change subject: [NO ISSUE][OTH] Log open file count on unexpected HttpServer close
......................................................................


Patch Set 4:

Integration Tests Started https://asterix-jenkins.ics.uci.edu/job/asterix-gerrit-integration-tests/5936/

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Change in asterixdb[master]: [NO ISSUE][OTH] Log open file count on unexpected HttpServer...

Posted by "Jenkins (Code Review)" <do...@asterixdb.incubator.apache.org>.

Jenkins has posted comments on this change.

Change subject: [NO ISSUE][OTH] Log open file count on unexpected HttpServer close
......................................................................


Patch Set 5:

Build Started https://asterix-jenkins.ics.uci.edu/job/hyracks-gerrit/2954/ (5/12)

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Change in asterixdb[master]: [NO ISSUE][OTH] Log open file count on unexpected HttpServer...

Posted by "Jenkins (Code Review)" <do...@asterixdb.incubator.apache.org>.

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Change subject: [NO ISSUE][OTH] Log open file count on unexpected HttpServer close
......................................................................


Patch Set 5:

Build Started https://asterix-jenkins.ics.uci.edu/job/asterix-gerrit-asterix-app-sql-execution/3041/ (8/12)

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Change in asterixdb[master]: [NO ISSUE][OTH] Log open file count on unexpected HttpServer...

Posted by "Anon. E. Moose (Code Review)" <do...@asterixdb.incubator.apache.org>.

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

Change subject: [NO ISSUE][OTH] Log open file count on unexpected HttpServer close
......................................................................


Patch Set 3:

Analytics Compatibility Compilation Successful
https://goo.gl/5H6FCx : SUCCESS

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Change in asterixdb[master]: [NO ISSUE][OTH] Log open file count on unexpected HttpServer...

Posted by "Jenkins (Code Review)" <do...@asterixdb.incubator.apache.org>.

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Change subject: [NO ISSUE][OTH] Log open file count on unexpected HttpServer close
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Patch Set 2:

Build Started https://asterix-jenkins.ics.uci.edu/job/asterix-gerrit-notopic/8496/ (9/12)

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Change in asterixdb[master]: [NO ISSUE][OTH] Log open file count on unexpected HttpServer...

Posted by "Jenkins (Code Review)" <do...@asterixdb.incubator.apache.org>.

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Change subject: [NO ISSUE][OTH] Log open file count on unexpected HttpServer close
......................................................................


Patch Set 4:

Build Started https://asterix-jenkins.ics.uci.edu/job/asterix-gerrit-verify-no-installer-app/3489/ (2/12)

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Change in asterixdb[master]: [NO ISSUE][OTH] Log open file count on unexpected HttpServer...

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Change subject: [NO ISSUE][OTH] Log open file count on unexpected HttpServer close
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Patch Set 4:

Build Started https://asterix-jenkins.ics.uci.edu/job/asterix-gerrit-verify-asterix-app/3513/ (12/12)

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Change in asterixdb[master]: [NO ISSUE][OTH] Log open file count on unexpected HttpServer...

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Change subject: [NO ISSUE][OTH] Log open file count on unexpected HttpServer close
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Patch Set 3:

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Change in asterixdb[master]: [NO ISSUE][OTH] Log open file count on unexpected HttpServer...

Posted by "Jenkins (Code Review)" <do...@asterixdb.incubator.apache.org>.

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Change subject: [NO ISSUE][OTH] Log open file count on unexpected HttpServer close
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Patch Set 5:

Build Started https://asterix-jenkins.ics.uci.edu/job/asterix-gerrit-source-assemblies/3259/ (7/12)

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Change in asterixdb[master]: [NO ISSUE][OTH] Log open file count on unexpected HttpServer...

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Change subject: [NO ISSUE][OTH] Log open file count on unexpected HttpServer close
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Patch Set 3:

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Change in asterixdb[master]: [NO ISSUE][OTH] Log open file count on unexpected HttpServer...

Posted by "Jenkins (Code Review)" <do...@asterixdb.incubator.apache.org>.

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Change subject: [NO ISSUE][OTH] Log open file count on unexpected HttpServer close
......................................................................


Patch Set 3:

Integration Tests Started https://asterix-jenkins.ics.uci.edu/job/asterix-gerrit-integration-tests/5935/

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Change in asterixdb[master]: [NO ISSUE][OTH] Log open file count on unexpected HttpServer...

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Change subject: [NO ISSUE][OTH] Log open file count on unexpected HttpServer close
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Patch Set 3:

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Change in asterixdb[master]: [NO ISSUE][OTH] Log open file count on unexpected HttpServer...

Posted by "abdullah alamoudi (Code Review)" <do...@asterixdb.incubator.apache.org>.

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Change subject: [NO ISSUE][OTH] Log open file count on unexpected HttpServer close
......................................................................


Patch Set 4:

Ignore cb -2.. Counter change proposed and passed

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Change in asterixdb[master]: [NO ISSUE][OTH] Log open file count on unexpected HttpServer...

Posted by "abdullah alamoudi (Code Review)" <do...@asterixdb.incubator.apache.org>.

abdullah alamoudi has posted comments on this change.

Change subject: [NO ISSUE][OTH] Log open file count on unexpected HttpServer close
......................................................................


Patch Set 3:

(2 comments)

https://asterix-gerrit.ics.uci.edu/#/c/2483/3/hyracks-fullstack/hyracks/hyracks-http/src/main/java/org/apache/hyracks/http/server/HttpServer.java
File hyracks-fullstack/hyracks/hyracks-http/src/main/java/org/apache/hyracks/http/server/HttpServer.java:

PS3, Line 257: try {
             :                     OperatingSystemMXBean os = ManagementFactory.getOperatingSystemMXBean();
             :                     String getOpenFileMethodName = "getOpenFileDescriptorCount";
             :                     Method getOpenFileDescriptorCount = os.getClass().getMethod(getOpenFileMethodName);
             :                     if (getOpenFileDescriptorCount == null) {
             :                         LOGGER.log(Level.WARN, "The OS Bean doesn't have {} method", getOpenFileMethodName);
             :                     } else {
             :                         Method getMaxFileDescriptorCount = os.getClass().getDeclaredMethod("getMaxFileDescriptorCount");
             :                         getOpenFileDescriptorCount.setAccessible(true);
             :                         getMaxFileDescriptorCount.setAccessible(true);
             :                         LOGGER.log(Level.WARN,
             :                                 "Number of open files by this process is {}. Max number of allowed open files is {} ",
             :                                 getOpenFileDescriptorCount.invoke(os), getMaxFileDescriptorCount.invoke(os));
             :                     }
             :                 } catch (Throwable th) { // NOSONAR: diagnostic code shouldn't cause server failure
             :                     LOGGER.log(Level.WARN, "Failed getting the count of open files", th);
             :                 }
> as part of the refactor, do the reflection discovery & setup once
Done


PS3, Line 257: try {
             :                     OperatingSystemMXBean os = ManagementFactory.getOperatingSystemMXBean();
             :                     String getOpenFileMethodName = "getOpenFileDescriptorCount";
             :                     Method getOpenFileDescriptorCount = os.getClass().getMethod(getOpenFileMethodName);
             :                     if (getOpenFileDescriptorCount == null) {
             :                         LOGGER.log(Level.WARN, "The OS Bean doesn't have {} method", getOpenFileMethodName);
             :                     } else {
             :                         Method getMaxFileDescriptorCount = os.getClass().getDeclaredMethod("getMaxFileDescriptorCount");
             :                         getOpenFileDescriptorCount.setAccessible(true);
             :                         getMaxFileDescriptorCount.setAccessible(true);
             :                         LOGGER.log(Level.WARN,
             :                                 "Number of open files by this process is {}. Max number of allowed open files is {} ",
             :                                 getOpenFileDescriptorCount.invoke(os), getMaxFileDescriptorCount.invoke(os));
             :                     }
             :                 } catch (Throwable th) { // NOSONAR: diagnostic code shouldn't cause server failure
             :                     LOGGER.log(Level.WARN, "Failed getting the count of open files", th);
             :                 }
> refactor to a util (e.g. MXHelper). We could use it in other places.
Done


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Change in asterixdb[master]: [NO ISSUE][OTH] Log open file count on unexpected HttpServer...

Posted by "Jenkins (Code Review)" <do...@asterixdb.incubator.apache.org>.

Jenkins has posted comments on this change.

Change subject: [NO ISSUE][OTH] Log open file count on unexpected HttpServer close
......................................................................


Patch Set 5:

BAD Compatibility Tests Started https://asterix-jenkins.ics.uci.edu/job/asterixbad-compat/2888/

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Change in asterixdb[master]: [NO ISSUE][OTH] Log open file count on unexpected HttpServer...

Posted by "abdullah alamoudi (Code Review)" <do...@asterixdb.incubator.apache.org>.

abdullah alamoudi has uploaded a new patch set (#2).

Change subject: [NO ISSUE][OTH] Log open file count on unexpected HttpServer close
......................................................................

[NO ISSUE][OTH] Log open file count on unexpected HttpServer close

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

Details:
- Recently, there has been some cases where the Http server
  repeatedly drops its listener. One of the possible causes
  for this is a leak in open file descriptor. To determine if
  this is the case, we log the open files count when that happens.

Change-Id: Ie43f3392268b3994839d1f98f4de9fe669c7be62
---
M hyracks-fullstack/hyracks/hyracks-http/src/main/java/org/apache/hyracks/http/server/HttpServer.java
1 file changed, 14 insertions(+), 0 deletions(-)


  git pull ssh://asterix-gerrit.ics.uci.edu:29418/asterixdb refs/changes/83/2483/2
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Change in asterixdb[master]: [NO ISSUE][OTH] Log open file count on unexpected HttpServer...

Posted by "Jenkins (Code Review)" <do...@asterixdb.incubator.apache.org>.

Jenkins has posted comments on this change.

Change subject: [NO ISSUE][OTH] Log open file count on unexpected HttpServer close
......................................................................


Patch Set 5:

Build Started https://asterix-jenkins.ics.uci.edu/job/asterix-gerrit-source-format/3002/ (2/12)

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Change in asterixdb[master]: [NO ISSUE][OTH] Log open file count on unexpected HttpServer...

Posted by "Jenkins (Code Review)" <do...@asterixdb.incubator.apache.org>.

Jenkins has posted comments on this change.

Change subject: [NO ISSUE][OTH] Log open file count on unexpected HttpServer close
......................................................................


Patch Set 2:

Build Started https://asterix-jenkins.ics.uci.edu/job/asterix-gerrit-cancellation-test/3026/ (8/12)

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Change in asterixdb[master]: [NO ISSUE][OTH] Log open file count on unexpected HttpServer...

Posted by "Jenkins (Code Review)" <do...@asterixdb.incubator.apache.org>.

Jenkins has posted comments on this change.

Change subject: [NO ISSUE][OTH] Log open file count on unexpected HttpServer close
......................................................................


Patch Set 2:

Build Started https://asterix-jenkins.ics.uci.edu/job/hyracks-gerrit/2951/ (2/12)

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Change in asterixdb[master]: [NO ISSUE][OTH] Log open file count on unexpected HttpServer...

Posted by "Jenkins (Code Review)" <do...@asterixdb.incubator.apache.org>.

Jenkins has posted comments on this change.

Change subject: [NO ISSUE][OTH] Log open file count on unexpected HttpServer close
......................................................................


Patch Set 4:

Build Started https://asterix-jenkins.ics.uci.edu/job/asterix-gerrit-asterix-app-sql-execution/3040/ (1/12)

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Change in asterixdb[master]: [NO ISSUE][OTH] Log open file count on unexpected HttpServer...

Posted by "abdullah alamoudi (Code Review)" <do...@asterixdb.incubator.apache.org>.

Hello Anon. E. Moose #1000171, Jenkins,

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

    https://asterix-gerrit.ics.uci.edu/2483

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

Change subject: [NO ISSUE][OTH] Log open file count on unexpected HttpServer close
......................................................................

[NO ISSUE][OTH] Log open file count on unexpected HttpServer close

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

Details:
- Recently, there has been some cases where the Http server
  repeatedly drops its listener. One of the possible causes
  for this is a leak in open file descriptor. To determine if
  this is the case, we log the open files count when that happens.

Change-Id: Ie43f3392268b3994839d1f98f4de9fe669c7be62
---
M hyracks-fullstack/hyracks/hyracks-control/hyracks-control-common/src/main/java/org/apache/hyracks/control/common/heartbeat/HeartbeatData.java
D hyracks-fullstack/hyracks/hyracks-control/hyracks-control-common/src/main/java/org/apache/hyracks/control/common/utils/MXHelper.java
M hyracks-fullstack/hyracks/hyracks-control/hyracks-control-nc/src/main/java/org/apache/hyracks/control/nc/NodeControllerService.java
M hyracks-fullstack/hyracks/hyracks-control/hyracks-control-nc/src/main/java/org/apache/hyracks/control/nc/heartbeat/HeartbeatComputeTask.java
M hyracks-fullstack/hyracks/hyracks-http/src/main/java/org/apache/hyracks/http/server/HttpServer.java
A hyracks-fullstack/hyracks/hyracks-util/src/main/java/org/apache/hyracks/util/MXHelper.java
6 files changed, 88 insertions(+), 57 deletions(-)


  git pull ssh://asterix-gerrit.ics.uci.edu:29418/asterixdb refs/changes/83/2483/4
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Change in asterixdb[master]: [NO ISSUE][OTH] Log open file count on unexpected HttpServer...

Posted by "Jenkins (Code Review)" <do...@asterixdb.incubator.apache.org>.

Jenkins has posted comments on this change.

Change subject: [NO ISSUE][OTH] Log open file count on unexpected HttpServer close
......................................................................


Patch Set 5:

Build Started https://asterix-jenkins.ics.uci.edu/job/asterix-gerrit-verify-asterix-app/3514/ (4/12)

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Gerrit-Reviewer: Ian Maxon <im...@apache.org>
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Change in asterixdb[master]: [NO ISSUE][OTH] Log open file count on unexpected HttpServer...

Posted by "Michael Blow (Code Review)" <do...@asterixdb.incubator.apache.org>.

Michael Blow has posted comments on this change.

Change subject: [NO ISSUE][OTH] Log open file count on unexpected HttpServer close
......................................................................


Patch Set 5: Code-Review+2

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Change in asterixdb[master]: [NO ISSUE][OTH] Log open file count on unexpected HttpServer...

Posted by "Jenkins (Code Review)" <do...@asterixdb.incubator.apache.org>.

Jenkins has posted comments on this change.

Change subject: [NO ISSUE][OTH] Log open file count on unexpected HttpServer close
......................................................................


Patch Set 2:

Build Started https://asterix-jenkins.ics.uci.edu/job/asterix-gerrit-verify-asterix-app/3511/ (12/12)

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Change in asterixdb[master]: [NO ISSUE][OTH] Log open file count on unexpected HttpServer...

Posted by "Jenkins (Code Review)" <do...@asterixdb.incubator.apache.org>.

Jenkins has posted comments on this change.

Change subject: [NO ISSUE][OTH] Log open file count on unexpected HttpServer close
......................................................................


Patch Set 3:

Build Started https://asterix-jenkins.ics.uci.edu/job/asterix-verify-storage/3571/ (11/12)

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Change in asterixdb[master]: [NO ISSUE][OTH] Log open file count on unexpected HttpServer...

Posted by "Jenkins (Code Review)" <do...@asterixdb.incubator.apache.org>.

Jenkins has posted comments on this change.

Change subject: [NO ISSUE][OTH] Log open file count on unexpected HttpServer close
......................................................................


Patch Set 3:

Build Started https://asterix-jenkins.ics.uci.edu/job/asterix-gerrit-verify-no-installer-app/3488/ (7/12)

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Change in asterixdb[master]: [NO ISSUE][OTH] Log open file count on unexpected HttpServer...

Posted by "Jenkins (Code Review)" <do...@asterixdb.incubator.apache.org>.

Jenkins has posted comments on this change.

Change subject: [NO ISSUE][OTH] Log open file count on unexpected HttpServer close
......................................................................


Patch Set 1:

Build Started https://asterix-jenkins.ics.uci.edu/job/asterix-verify-storage/3569/ (10/12)

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Change in asterixdb[master]: [NO ISSUE][OTH] Log open file count on unexpected HttpServer...

Posted by "Jenkins (Code Review)" <do...@asterixdb.incubator.apache.org>.

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Change subject: [NO ISSUE][OTH] Log open file count on unexpected HttpServer close
......................................................................


Patch Set 4: Integration-Tests+1

Integration Tests Successful

https://asterix-jenkins.ics.uci.edu/job/asterix-gerrit-integration-tests/5937/ : SUCCESS

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Change in asterixdb[master]: [NO ISSUE][OTH] Log open file count on unexpected HttpServer...

Posted by "Jenkins (Code Review)" <do...@asterixdb.incubator.apache.org>.

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Change subject: [NO ISSUE][OTH] Log open file count on unexpected HttpServer close
......................................................................


Patch Set 2:

Build Started https://asterix-jenkins.ics.uci.edu/job/asterix-gerrit-sonar/6989/ (1/12)

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Change in asterixdb[master]: [NO ISSUE][OTH] Log open file count on unexpected HttpServer...

Posted by "Jenkins (Code Review)" <do...@asterixdb.incubator.apache.org>.

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Change subject: [NO ISSUE][OTH] Log open file count on unexpected HttpServer close
......................................................................


Patch Set 4: Contrib+1

BAD Compatibility Tests Successful

https://asterix-jenkins.ics.uci.edu/job/asterixbad-compat/2887/ : SUCCESS

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Change in asterixdb[master]: [NO ISSUE][OTH] Log open file count on unexpected HttpServer...

Posted by "Jenkins (Code Review)" <do...@asterixdb.incubator.apache.org>.

Jenkins has posted comments on this change.

Change subject: [NO ISSUE][OTH] Log open file count on unexpected HttpServer close
......................................................................


Patch Set 1:

Build Started https://asterix-jenkins.ics.uci.edu/job/hyracks-gerrit/2950/ (7/12)

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Change in asterixdb[master]: [NO ISSUE][OTH] Log open file count on unexpected HttpServer...

Posted by "Anon. E. Moose (Code Review)" <do...@asterixdb.incubator.apache.org>.

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

Change subject: [NO ISSUE][OTH] Log open file count on unexpected HttpServer close
......................................................................


Patch Set 4: Contrib-2

Analytics Compatibility Compilation Failed
https://goo.gl/ASa8vM : UNSTABLE

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Change in asterixdb[master]: [NO ISSUE][OTH] Log open file count on unexpected HttpServer...

Posted by "Jenkins (Code Review)" <do...@asterixdb.incubator.apache.org>.

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Change subject: [NO ISSUE][OTH] Log open file count on unexpected HttpServer close
......................................................................


Patch Set 2:

Build Started https://asterix-jenkins.ics.uci.edu/job/asterix-gerrit-ensure-ancestor/1046/ (5/12)

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Change in asterixdb[master]: [NO ISSUE][OTH] Log open file count on unexpected HttpServer...

Posted by "Murtadha Hubail (Code Review)" <do...@asterixdb.incubator.apache.org>.

Murtadha Hubail has posted comments on this change.

Change subject: [NO ISSUE][OTH] Log open file count on unexpected HttpServer close
......................................................................


Patch Set 3:

(1 comment)

https://asterix-gerrit.ics.uci.edu/#/c/2483/3/hyracks-fullstack/hyracks/hyracks-http/src/main/java/org/apache/hyracks/http/server/HttpServer.java
File hyracks-fullstack/hyracks/hyracks-http/src/main/java/org/apache/hyracks/http/server/HttpServer.java:

PS3, Line 257: try {
             :                     OperatingSystemMXBean os = ManagementFactory.getOperatingSystemMXBean();
             :                     String getOpenFileMethodName = "getOpenFileDescriptorCount";
             :                     Method getOpenFileDescriptorCount = os.getClass().getMethod(getOpenFileMethodName);
             :                     if (getOpenFileDescriptorCount == null) {
             :                         LOGGER.log(Level.WARN, "The OS Bean doesn't have {} method", getOpenFileMethodName);
             :                     } else {
             :                         Method getMaxFileDescriptorCount = os.getClass().getDeclaredMethod("getMaxFileDescriptorCount");
             :                         getOpenFileDescriptorCount.setAccessible(true);
             :                         getMaxFileDescriptorCount.setAccessible(true);
             :                         LOGGER.log(Level.WARN,
             :                                 "Number of open files by this process is {}. Max number of allowed open files is {} ",
             :                                 getOpenFileDescriptorCount.invoke(os), getMaxFileDescriptorCount.invoke(os));
             :                     }
             :                 } catch (Throwable th) { // NOSONAR: diagnostic code shouldn't cause server failure
             :                     LOGGER.log(Level.WARN, "Failed getting the count of open files", th);
             :                 }
refactor to a util (e.g. MXHelper). We could use it in other places.


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Change in asterixdb[master]: [NO ISSUE][OTH] Log open file count on unexpected HttpServer...

Posted by "abdullah alamoudi (Code Review)" <do...@asterixdb.incubator.apache.org>.

Hello Anon. E. Moose #1000171, Jenkins,

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

    https://asterix-gerrit.ics.uci.edu/2483

to look at the new patch set (#5).

Change subject: [NO ISSUE][OTH] Log open file count on unexpected HttpServer close
......................................................................

[NO ISSUE][OTH] Log open file count on unexpected HttpServer close

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

Details:
- Recently, there has been some cases where the Http server
  repeatedly drops its listener. One of the possible causes
  for this is a leak in open file descriptor. To determine if
  this is the case, we log the open files count when that happens.

Change-Id: Ie43f3392268b3994839d1f98f4de9fe669c7be62
---
M hyracks-fullstack/hyracks/hyracks-control/hyracks-control-common/src/main/java/org/apache/hyracks/control/common/heartbeat/HeartbeatData.java
D hyracks-fullstack/hyracks/hyracks-control/hyracks-control-common/src/main/java/org/apache/hyracks/control/common/utils/MXHelper.java
M hyracks-fullstack/hyracks/hyracks-control/hyracks-control-nc/src/main/java/org/apache/hyracks/control/nc/NodeControllerService.java
M hyracks-fullstack/hyracks/hyracks-control/hyracks-control-nc/src/main/java/org/apache/hyracks/control/nc/heartbeat/HeartbeatComputeTask.java
M hyracks-fullstack/hyracks/hyracks-http/src/main/java/org/apache/hyracks/http/server/HttpServer.java
A hyracks-fullstack/hyracks/hyracks-util/src/main/java/org/apache/hyracks/util/MXHelper.java
6 files changed, 114 insertions(+), 57 deletions(-)


  git pull ssh://asterix-gerrit.ics.uci.edu:29418/asterixdb refs/changes/83/2483/5
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Change in asterixdb[master]: [NO ISSUE][OTH] Log open file count on unexpected HttpServer...

Posted by "Jenkins (Code Review)" <do...@asterixdb.incubator.apache.org>.

Jenkins has posted comments on this change.

Change subject: [NO ISSUE][OTH] Log open file count on unexpected HttpServer close
......................................................................


Patch Set 1:

Build Started https://asterix-jenkins.ics.uci.edu/job/asterix-gerrit-sonar/6988/ (5/12)

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Change in asterixdb[master]: [NO ISSUE][OTH] Log open file count on unexpected HttpServer...

Posted by "Michael Blow (Code Review)" <do...@asterixdb.incubator.apache.org>.

Michael Blow has posted comments on this change.

Change subject: [NO ISSUE][OTH] Log open file count on unexpected HttpServer close
......................................................................


Patch Set 5:

(4 comments)

https://asterix-gerrit.ics.uci.edu/#/c/2483/5/hyracks-fullstack/hyracks/hyracks-util/src/main/java/org/apache/hyracks/util/MXHelper.java
File hyracks-fullstack/hyracks/hyracks-util/src/main/java/org/apache/hyracks/util/MXHelper.java:

PS5, Line 67: Integer
don't box


PS5, Line 72: Integer
don't box


PS5, Line 79: Integer
don't box


PS5, Line 84: Integer
don't box


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Change in asterixdb[master]: [NO ISSUE][OTH] Log open file count on unexpected HttpServer...

Posted by "Jenkins (Code Review)" <do...@asterixdb.incubator.apache.org>.

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Change subject: [NO ISSUE][OTH] Log open file count on unexpected HttpServer close
......................................................................


Patch Set 4:

Build Started https://asterix-jenkins.ics.uci.edu/job/asterix-gerrit-source-format/3001/ (9/12)

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Change in asterixdb[master]: [NO ISSUE][OTH] Log open file count on unexpected HttpServer...

Posted by "Jenkins (Code Review)" <do...@asterixdb.incubator.apache.org>.

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Change subject: [NO ISSUE][OTH] Log open file count on unexpected HttpServer close
......................................................................


Patch Set 2:

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Change in asterixdb[master]: [NO ISSUE][OTH] Log open file count on unexpected HttpServer...

Posted by "Jenkins (Code Review)" <do...@asterixdb.incubator.apache.org>.

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Change subject: [NO ISSUE][OTH] Log open file count on unexpected HttpServer close
......................................................................


Patch Set 4:

Build Started https://asterix-jenkins.ics.uci.edu/job/asterix-gerrit-notopic/8498/ (11/12)

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Change in asterixdb[master]: [NO ISSUE][OTH] Log open file count on unexpected HttpServer...

Posted by "Jenkins (Code Review)" <do...@asterixdb.incubator.apache.org>.

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Change subject: [NO ISSUE][OTH] Log open file count on unexpected HttpServer close
......................................................................


Patch Set 5:

Build Started https://asterix-jenkins.ics.uci.edu/job/asterix-gerrit-verify-no-installer-app/3490/ (3/12)

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Change in asterixdb[master]: [NO ISSUE][OTH] Log open file count on unexpected HttpServer...

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Change subject: [NO ISSUE][OTH] Log open file count on unexpected HttpServer close
......................................................................


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Change in asterixdb[master]: [NO ISSUE][OTH] Log open file count on unexpected HttpServer...

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Change subject: [NO ISSUE][OTH] Log open file count on unexpected HttpServer close
......................................................................


Patch Set 3:

Build Started https://asterix-jenkins.ics.uci.edu/job/asterix-gerrit-notopic/8497/ (4/12)

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Change in asterixdb[master]: [NO ISSUE][OTH] Log open file count on unexpected HttpServer...

Posted by "Anon. E. Moose (Code Review)" <do...@asterixdb.incubator.apache.org>.

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

Change subject: [NO ISSUE][OTH] Log open file count on unexpected HttpServer close
......................................................................


Patch Set 2: Contrib+1

Analytics Compatibility Tests Successful
https://goo.gl/ek4xAC : SUCCESS

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Change in asterixdb[master]: [NO ISSUE][OTH] Log open file count on unexpected HttpServer...

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Change subject: [NO ISSUE][OTH] Log open file count on unexpected HttpServer close
......................................................................


Patch Set 5: Integration-Tests+1

Integration Tests Successful

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Change in asterixdb[master]: [NO ISSUE][OTH] Log open file count on unexpected HttpServer...

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Change subject: [NO ISSUE][OTH] Log open file count on unexpected HttpServer close
......................................................................


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Change in asterixdb[master]: [NO ISSUE][OTH] Log open file count on unexpected HttpServer...

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Change subject: [NO ISSUE][OTH] Log open file count on unexpected HttpServer close
......................................................................


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Change in asterixdb[master]: [NO ISSUE][OTH] Log open file count on unexpected HttpServer...

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Change subject: [NO ISSUE][OTH] Log open file count on unexpected HttpServer close
......................................................................


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Change in asterixdb[master]: [NO ISSUE][OTH] Log open file count on unexpected HttpServer...

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Change subject: [NO ISSUE][OTH] Log open file count on unexpected HttpServer close
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Patch Set 4: Integration-Tests-1

Integration Tests Failed

https://asterix-jenkins.ics.uci.edu/job/asterix-gerrit-integration-tests/5936/ : UNSTABLE

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Change in asterixdb[master]: [NO ISSUE][OTH] Log open file count on unexpected HttpServer...

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Change subject: [NO ISSUE][OTH] Log open file count on unexpected HttpServer close
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Change subject: [NO ISSUE][OTH] Log open file count on unexpected HttpServer close
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Change in asterixdb[master]: [NO ISSUE][OTH] Log open file count on unexpected HttpServer...

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Change subject: [NO ISSUE][OTH] Log open file count on unexpected HttpServer close
......................................................................


Patch Set 5:

Integration Tests Started https://asterix-jenkins.ics.uci.edu/job/asterix-gerrit-integration-tests/5938/

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Change in asterixdb[master]: [NO ISSUE][OTH] Log open file count on unexpected HttpServer...

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Change subject: [NO ISSUE][OTH] Log open file count on unexpected HttpServer close
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Patch Set 2:

Build Started https://asterix-jenkins.ics.uci.edu/job/asterix-gerrit-asterix-app-sql-execution/3038/ (3/12)

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Change in asterixdb[master]: [NO ISSUE][OTH] Log open file count on unexpected HttpServer...

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Change subject: [NO ISSUE][OTH] Log open file count on unexpected HttpServer close
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Patch Set 5:

Build Started https://asterix-jenkins.ics.uci.edu/job/asterix-gerrit-asterix-app/3762/ (11/12)

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Change in asterixdb[master]: [NO ISSUE][OTH] Log open file count on unexpected HttpServer...

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Change subject: [NO ISSUE][OTH] Log open file count on unexpected HttpServer close
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Patch Set 4:

Build Started https://asterix-jenkins.ics.uci.edu/job/asterix-gerrit-sonar/6991/ (4/12)

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Change in asterixdb[master]: [NO ISSUE][OTH] Log open file count on unexpected HttpServer...

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Change subject: [NO ISSUE][OTH] Log open file count on unexpected HttpServer close
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Patch Set 3: Contrib+1

BAD Compatibility Tests Successful

https://asterix-jenkins.ics.uci.edu/job/asterixbad-compat/2886/ : SUCCESS

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Change in asterixdb[master]: [NO ISSUE][OTH] Log open file count on unexpected HttpServer...

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

Change subject: [NO ISSUE][OTH] Log open file count on unexpected HttpServer close
......................................................................


Patch Set 5:

Analytics Compatibility Compilation Successful
https://goo.gl/oSBWsr : SUCCESS

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Change in asterixdb[master]: [NO ISSUE][OTH] Log open file count on unexpected HttpServer...

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Change subject: [NO ISSUE][OTH] Log open file count on unexpected HttpServer close
......................................................................


Patch Set 3: Contrib+1

Analytics Compatibility Tests Successful
https://goo.gl/WNBw4L : SUCCESS

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Change in asterixdb[master]: [NO ISSUE][OTH] Log open file count on unexpected HttpServer...

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Change in asterixdb[master]: [NO ISSUE][OTH] Log open file count on unexpected HttpServer...

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Change subject: [NO ISSUE][OTH] Log open file count on unexpected HttpServer close
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Patch Set 4: -Integration-Tests

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Change in asterixdb[master]: [NO ISSUE][OTH] Log open file count on unexpected HttpServer...

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Change subject: [NO ISSUE][OTH] Log open file count on unexpected HttpServer close
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Patch Set 4:

BAD Compatibility Tests Started https://asterix-jenkins.ics.uci.edu/job/asterixbad-compat/2887/

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Change in asterixdb[master]: [NO ISSUE][OTH] Log open file count on unexpected HttpServer...

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Change subject: [NO ISSUE][OTH] Log open file count on unexpected HttpServer close
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Patch Set 2:

Build Started https://asterix-jenkins.ics.uci.edu/job/asterix-gerrit-source-assemblies/3256/ (6/12)

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Change in asterixdb[master]: [NO ISSUE][OTH] Log open file count on unexpected HttpServer...

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Change subject: [NO ISSUE][OTH] Log open file count on unexpected HttpServer close
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Patch Set 5:

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Change in asterixdb[master]: [NO ISSUE][OTH] Log open file count on unexpected HttpServer...

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Change subject: [NO ISSUE][OTH] Log open file count on unexpected HttpServer close
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Patch Set 1:

Build Started https://asterix-jenkins.ics.uci.edu/job/asterix-gerrit-asterix-app-sql-execution/3037/ (8/12)

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Change in asterixdb[master]: [NO ISSUE][OTH] Log open file count on unexpected HttpServer...

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Change subject: [NO ISSUE][OTH] Log open file count on unexpected HttpServer close
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Build Started https://asterix-jenkins.ics.uci.edu/job/asterix-gerrit-ensure-ancestor/1048/ (3/12)

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Change in asterixdb[master]: [NO ISSUE][OTH] Log open file count on unexpected HttpServer...

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Change subject: [NO ISSUE][OTH] Log open file count on unexpected HttpServer close
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Patch Set 1:

Build Started https://asterix-jenkins.ics.uci.edu/job/asterix-gerrit-asterix-app/3758/ (9/12)

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Change in asterixdb[master]: [NO ISSUE][OTH] Log open file count on unexpected HttpServer...

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Change subject: [NO ISSUE][OTH] Log open file count on unexpected HttpServer close
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Patch Set 1:

Build Started https://asterix-jenkins.ics.uci.edu/job/asterix-gerrit-verify-asterix-app/3510/ (3/12)

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Change in asterixdb[master]: [NO ISSUE][OTH] Log open file count on unexpected HttpServer...

Posted by "abdullah alamoudi (Code Review)" <do...@asterixdb.incubator.apache.org>.

Hello Jenkins,

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

    https://asterix-gerrit.ics.uci.edu/2483

to look at the new patch set (#3).

Change subject: [NO ISSUE][OTH] Log open file count on unexpected HttpServer close
......................................................................

[NO ISSUE][OTH] Log open file count on unexpected HttpServer close

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

Details:
- Recently, there has been some cases where the Http server
  repeatedly drops its listener. One of the possible causes
  for this is a leak in open file descriptor. To determine if
  this is the case, we log the open files count when that happens.

Change-Id: Ie43f3392268b3994839d1f98f4de9fe669c7be62
---
M hyracks-fullstack/hyracks/hyracks-http/src/main/java/org/apache/hyracks/http/server/HttpServer.java
1 file changed, 20 insertions(+), 0 deletions(-)


  git pull ssh://asterix-gerrit.ics.uci.edu:29418/asterixdb refs/changes/83/2483/3
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Change in asterixdb[master]: [NO ISSUE][OTH] Log open file count on unexpected HttpServer...

Posted by "Anon. E. Moose (Code Review)" <do...@asterixdb.incubator.apache.org>.

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

Change subject: [NO ISSUE][OTH] Log open file count on unexpected HttpServer close
......................................................................


Patch Set 1: Contrib+1

Analytics Compatibility Tests Successful
https://goo.gl/rvtGVk : SUCCESS

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Change in asterixdb[master]: [NO ISSUE][OTH] Log open file count on unexpected HttpServer...

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Change subject: [NO ISSUE][OTH] Log open file count on unexpected HttpServer close
......................................................................


Patch Set 2:

Build Started https://asterix-jenkins.ics.uci.edu/job/asterix-gerrit-verify-no-installer-app/3487/ (10/12)

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Change in asterixdb[master]: [NO ISSUE][OTH] Log open file count on unexpected HttpServer...

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Change subject: [NO ISSUE][OTH] Log open file count on unexpected HttpServer close
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Patch Set 3:

Build Started https://asterix-jenkins.ics.uci.edu/job/asterix-gerrit-ensure-ancestor/1047/ (5/12)

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Change in asterixdb[master]: [NO ISSUE][OTH] Log open file count on unexpected HttpServer...

Posted by "abdullah alamoudi (Code Review)" <do...@asterixdb.incubator.apache.org>.

abdullah alamoudi has submitted this change and it was merged.

Change subject: [NO ISSUE][OTH] Log open file count on unexpected HttpServer close
......................................................................


[NO ISSUE][OTH] Log open file count on unexpected HttpServer close

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

Details:
- Recently, there has been some cases where the Http server
  repeatedly drops its listener. One of the possible causes
  for this is a leak in open file descriptor. To determine if
  this is the case, we log the open files count when that happens.

Change-Id: Ie43f3392268b3994839d1f98f4de9fe669c7be62
Reviewed-on: https://asterix-gerrit.ics.uci.edu/2483
Sonar-Qube: Jenkins <je...@fulliautomatix.ics.uci.edu>
Reviewed-by: Michael Blow <mb...@apache.org>
Tested-by: Jenkins <je...@fulliautomatix.ics.uci.edu>
Contrib: Jenkins <je...@fulliautomatix.ics.uci.edu>
Integration-Tests: Jenkins <je...@fulliautomatix.ics.uci.edu>
---
M hyracks-fullstack/hyracks/hyracks-control/hyracks-control-common/src/main/java/org/apache/hyracks/control/common/heartbeat/HeartbeatData.java
D hyracks-fullstack/hyracks/hyracks-control/hyracks-control-common/src/main/java/org/apache/hyracks/control/common/utils/MXHelper.java
M hyracks-fullstack/hyracks/hyracks-control/hyracks-control-nc/src/main/java/org/apache/hyracks/control/nc/NodeControllerService.java
M hyracks-fullstack/hyracks/hyracks-control/hyracks-control-nc/src/main/java/org/apache/hyracks/control/nc/heartbeat/HeartbeatComputeTask.java
M hyracks-fullstack/hyracks/hyracks-http/src/main/java/org/apache/hyracks/http/server/HttpServer.java
A hyracks-fullstack/hyracks/hyracks-util/src/main/java/org/apache/hyracks/util/MXHelper.java
6 files changed, 114 insertions(+), 57 deletions(-)

Approvals:
  Anon. E. Moose #1000171: 
  Jenkins: Verified; No violations found; ; Verified
  Michael Blow: Looks good to me, approved



diff --git a/hyracks-fullstack/hyracks/hyracks-control/hyracks-control-common/src/main/java/org/apache/hyracks/control/common/heartbeat/HeartbeatData.java b/hyracks-fullstack/hyracks/hyracks-control/hyracks-control-common/src/main/java/org/apache/hyracks/control/common/heartbeat/HeartbeatData.java
index d09d0b4..76b68bb 100644
--- a/hyracks-fullstack/hyracks/hyracks-control/hyracks-control-common/src/main/java/org/apache/hyracks/control/common/heartbeat/HeartbeatData.java
+++ b/hyracks-fullstack/hyracks/hyracks-control/hyracks-control-common/src/main/java/org/apache/hyracks/control/common/heartbeat/HeartbeatData.java
@@ -18,7 +18,7 @@
  */
 package org.apache.hyracks.control.common.heartbeat;
 
-import static org.apache.hyracks.control.common.utils.MXHelper.gcMXBeans;
+import static org.apache.hyracks.util.MXHelper.gcMXBeans;
 
 import java.io.DataInput;
 import java.io.DataOutput;
diff --git a/hyracks-fullstack/hyracks/hyracks-control/hyracks-control-common/src/main/java/org/apache/hyracks/control/common/utils/MXHelper.java b/hyracks-fullstack/hyracks/hyracks-control/hyracks-control-common/src/main/java/org/apache/hyracks/control/common/utils/MXHelper.java
deleted file mode 100644
index cfe8c21..0000000
--- a/hyracks-fullstack/hyracks/hyracks-control/hyracks-control-common/src/main/java/org/apache/hyracks/control/common/utils/MXHelper.java
+++ /dev/null
@@ -1,48 +0,0 @@
-/*
- * 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.hyracks.control.common.utils;
-
-import java.lang.management.GarbageCollectorMXBean;
-import java.lang.management.ManagementFactory;
-import java.lang.management.MemoryMXBean;
-import java.lang.management.OperatingSystemMXBean;
-import java.lang.management.RuntimeMXBean;
-import java.lang.management.ThreadMXBean;
-import java.util.Collections;
-import java.util.List;
-
-public class MXHelper {
-    public static final MemoryMXBean memoryMXBean;
-    public static final List<GarbageCollectorMXBean> gcMXBeans;
-    public static final ThreadMXBean threadMXBean;
-    public static final RuntimeMXBean runtimeMXBean;
-    public static final OperatingSystemMXBean osMXBean;
-
-    static {
-        memoryMXBean = ManagementFactory.getMemoryMXBean();
-        gcMXBeans = Collections.unmodifiableList(ManagementFactory.getGarbageCollectorMXBeans());
-        threadMXBean = ManagementFactory.getThreadMXBean();
-        runtimeMXBean = ManagementFactory.getRuntimeMXBean();
-        osMXBean = ManagementFactory.getOperatingSystemMXBean();
-    }
-
-    private MXHelper() {
-    }
-
-}
diff --git a/hyracks-fullstack/hyracks/hyracks-control/hyracks-control-nc/src/main/java/org/apache/hyracks/control/nc/NodeControllerService.java b/hyracks-fullstack/hyracks/hyracks-control/hyracks-control-nc/src/main/java/org/apache/hyracks/control/nc/NodeControllerService.java
index 6c3a641..0756210 100644
--- a/hyracks-fullstack/hyracks/hyracks-control/hyracks-control-nc/src/main/java/org/apache/hyracks/control/nc/NodeControllerService.java
+++ b/hyracks-fullstack/hyracks/hyracks-control/hyracks-control-nc/src/main/java/org/apache/hyracks/control/nc/NodeControllerService.java
@@ -18,10 +18,10 @@
  */
 package org.apache.hyracks.control.nc;
 
-import static org.apache.hyracks.control.common.utils.MXHelper.gcMXBeans;
-import static org.apache.hyracks.control.common.utils.MXHelper.memoryMXBean;
-import static org.apache.hyracks.control.common.utils.MXHelper.osMXBean;
-import static org.apache.hyracks.control.common.utils.MXHelper.runtimeMXBean;
+import static org.apache.hyracks.util.MXHelper.gcMXBeans;
+import static org.apache.hyracks.util.MXHelper.memoryMXBean;
+import static org.apache.hyracks.util.MXHelper.osMXBean;
+import static org.apache.hyracks.util.MXHelper.runtimeMXBean;
 
 import java.io.File;
 import java.io.IOException;
diff --git a/hyracks-fullstack/hyracks/hyracks-control/hyracks-control-nc/src/main/java/org/apache/hyracks/control/nc/heartbeat/HeartbeatComputeTask.java b/hyracks-fullstack/hyracks/hyracks-control/hyracks-control-nc/src/main/java/org/apache/hyracks/control/nc/heartbeat/HeartbeatComputeTask.java
index 4965b85..dfa5ff3 100644
--- a/hyracks-fullstack/hyracks/hyracks-control/hyracks-control-nc/src/main/java/org/apache/hyracks/control/nc/heartbeat/HeartbeatComputeTask.java
+++ b/hyracks-fullstack/hyracks/hyracks-control/hyracks-control-nc/src/main/java/org/apache/hyracks/control/nc/heartbeat/HeartbeatComputeTask.java
@@ -18,10 +18,10 @@
  */
 package org.apache.hyracks.control.nc.heartbeat;
 
-import static org.apache.hyracks.control.common.utils.MXHelper.gcMXBeans;
-import static org.apache.hyracks.control.common.utils.MXHelper.memoryMXBean;
-import static org.apache.hyracks.control.common.utils.MXHelper.osMXBean;
-import static org.apache.hyracks.control.common.utils.MXHelper.threadMXBean;
+import static org.apache.hyracks.util.MXHelper.gcMXBeans;
+import static org.apache.hyracks.util.MXHelper.memoryMXBean;
+import static org.apache.hyracks.util.MXHelper.osMXBean;
+import static org.apache.hyracks.util.MXHelper.threadMXBean;
 
 import java.lang.management.GarbageCollectorMXBean;
 import java.lang.management.MemoryUsage;
diff --git a/hyracks-fullstack/hyracks/hyracks-http/src/main/java/org/apache/hyracks/http/server/HttpServer.java b/hyracks-fullstack/hyracks/hyracks-http/src/main/java/org/apache/hyracks/http/server/HttpServer.java
index d971a7c..41e0088 100644
--- a/hyracks-fullstack/hyracks/hyracks-http/src/main/java/org/apache/hyracks/http/server/HttpServer.java
+++ b/hyracks-fullstack/hyracks/hyracks-http/src/main/java/org/apache/hyracks/http/server/HttpServer.java
@@ -30,6 +30,7 @@
 
 import org.apache.hyracks.http.api.IChannelClosedHandler;
 import org.apache.hyracks.http.api.IServlet;
+import org.apache.hyracks.util.MXHelper;
 import org.apache.hyracks.util.ThreadDumpUtil;
 import org.apache.logging.log4j.Level;
 import org.apache.logging.log4j.LogManager;
@@ -251,6 +252,7 @@
                     return;
                 }
                 LOGGER.log(Level.WARN, "{} has stopped unexpectedly. Starting server recovery", this);
+                MXHelper.logFileDescriptors();
                 triggerRecovery();
             }
         });
diff --git a/hyracks-fullstack/hyracks/hyracks-util/src/main/java/org/apache/hyracks/util/MXHelper.java b/hyracks-fullstack/hyracks/hyracks-util/src/main/java/org/apache/hyracks/util/MXHelper.java
new file mode 100644
index 0000000..2b65106
--- /dev/null
+++ b/hyracks-fullstack/hyracks/hyracks-util/src/main/java/org/apache/hyracks/util/MXHelper.java
@@ -0,0 +1,103 @@
+/*
+ * 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.hyracks.util;
+
+import java.lang.management.GarbageCollectorMXBean;
+import java.lang.management.ManagementFactory;
+import java.lang.management.MemoryMXBean;
+import java.lang.management.OperatingSystemMXBean;
+import java.lang.management.RuntimeMXBean;
+import java.lang.management.ThreadMXBean;
+import java.lang.reflect.Method;
+import java.util.Collections;
+import java.util.List;
+
+import org.apache.logging.log4j.Level;
+import org.apache.logging.log4j.LogManager;
+import org.apache.logging.log4j.Logger;
+
+public class MXHelper {
+    private static final Logger LOGGER = LogManager.getLogger();
+    public static final MemoryMXBean memoryMXBean = ManagementFactory.getMemoryMXBean();
+    public static final List<GarbageCollectorMXBean> gcMXBeans =
+            Collections.unmodifiableList(ManagementFactory.getGarbageCollectorMXBeans());
+    public static final ThreadMXBean threadMXBean = ManagementFactory.getThreadMXBean();
+    public static final RuntimeMXBean runtimeMXBean = ManagementFactory.getRuntimeMXBean();
+    public static final OperatingSystemMXBean osMXBean = ManagementFactory.getOperatingSystemMXBean();
+    private static Method getOpenFileDescriptorCount;
+    private static Method getMaxFileDescriptorCount;
+
+    static {
+        try {
+            getOpenFileDescriptorCount = osMXBean.getClass().getMethod("getOpenFileDescriptorCount");
+            getMaxFileDescriptorCount = osMXBean.getClass().getDeclaredMethod("getMaxFileDescriptorCount");
+            getOpenFileDescriptorCount.setAccessible(true);
+            getMaxFileDescriptorCount.setAccessible(true);
+        } catch (Throwable th) { // NOSONAR: diagnostic code shouldn't cause server failure
+            getOpenFileDescriptorCount = null;
+            getMaxFileDescriptorCount = null;
+            LOGGER.log(Level.WARN, "Failed setting up the methods to get the number of file descriptors through {}",
+                    osMXBean.getClass().getName(), th);
+        }
+    }
+
+    private MXHelper() {
+    }
+
+    public static boolean supportOpenFileCount() {
+        return getOpenFileDescriptorCount != null;
+    }
+
+    public static Integer getCurrentOpenFileCount() {
+        if (getOpenFileDescriptorCount == null) {
+            return -1;
+        }
+        try {
+            return (Integer) getOpenFileDescriptorCount.invoke(osMXBean);
+        } catch (Throwable e) { // NOSONAR
+            LOGGER.log(Level.WARN, "Failure invoking getOpenFileDescriptorCount", e);
+            return -1;
+        }
+    }
+
+    public static Integer getMaxOpenFileCount() {
+        if (getMaxFileDescriptorCount == null) {
+            return -1;
+        }
+        try {
+            return (Integer) getMaxFileDescriptorCount.invoke(osMXBean);
+        } catch (Throwable e) { // NOSONAR
+            LOGGER.log(Level.WARN, "Failure invoking getMaxFileDescriptorCount", e);
+            return -1;
+        }
+    }
+
+    public static void logFileDescriptors() {
+        try {
+            if (supportOpenFileCount()) {
+                LOGGER.log(Level.WARN,
+                        "Number of open files by this process is {}. Max number of allowed open files is {} ",
+                        MXHelper::getCurrentOpenFileCount, MXHelper::getMaxOpenFileCount);
+            }
+        } catch (Throwable th) { // NOSONAR: diagnostic code shouldn't cause server failure
+            LOGGER.log(Level.WARN, "Failed getting the count of open files", th);
+        }
+    }
+
+}

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Gerrit-Change-Id: Ie43f3392268b3994839d1f98f4de9fe669c7be62
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Change in asterixdb[master]: [NO ISSUE][OTH] Log open file count on unexpected HttpServer...

Posted by "Jenkins (Code Review)" <do...@asterixdb.incubator.apache.org>.

Jenkins has posted comments on this change.

Change subject: [NO ISSUE][OTH] Log open file count on unexpected HttpServer close
......................................................................


Patch Set 3:

Build Started https://asterix-jenkins.ics.uci.edu/job/asterix-gerrit-verify-asterix-app/3512/ (6/12)

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Change in asterixdb[master]: [NO ISSUE][OTH] Log open file count on unexpected HttpServer...

Posted by "Michael Blow (Code Review)" <do...@asterixdb.incubator.apache.org>.

Michael Blow has posted comments on this change.

Change subject: [NO ISSUE][OTH] Log open file count on unexpected HttpServer close
......................................................................


Patch Set 3:

(1 comment)

https://asterix-gerrit.ics.uci.edu/#/c/2483/3/hyracks-fullstack/hyracks/hyracks-http/src/main/java/org/apache/hyracks/http/server/HttpServer.java
File hyracks-fullstack/hyracks/hyracks-http/src/main/java/org/apache/hyracks/http/server/HttpServer.java:

PS3, Line 257: try {
             :                     OperatingSystemMXBean os = ManagementFactory.getOperatingSystemMXBean();
             :                     String getOpenFileMethodName = "getOpenFileDescriptorCount";
             :                     Method getOpenFileDescriptorCount = os.getClass().getMethod(getOpenFileMethodName);
             :                     if (getOpenFileDescriptorCount == null) {
             :                         LOGGER.log(Level.WARN, "The OS Bean doesn't have {} method", getOpenFileMethodName);
             :                     } else {
             :                         Method getMaxFileDescriptorCount = os.getClass().getDeclaredMethod("getMaxFileDescriptorCount");
             :                         getOpenFileDescriptorCount.setAccessible(true);
             :                         getMaxFileDescriptorCount.setAccessible(true);
             :                         LOGGER.log(Level.WARN,
             :                                 "Number of open files by this process is {}. Max number of allowed open files is {} ",
             :                                 getOpenFileDescriptorCount.invoke(os), getMaxFileDescriptorCount.invoke(os));
             :                     }
             :                 } catch (Throwable th) { // NOSONAR: diagnostic code shouldn't cause server failure
             :                     LOGGER.log(Level.WARN, "Failed getting the count of open files", th);
             :                 }
> refactor to a util (e.g. MXHelper). We could use it in other places.
as part of the refactor, do the reflection discovery & setup once


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Change in asterixdb[master]: [NO ISSUE][OTH] Log open file count on unexpected HttpServer...

Posted by "Jenkins (Code Review)" <do...@asterixdb.incubator.apache.org>.

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Change subject: [NO ISSUE][OTH] Log open file count on unexpected HttpServer close
......................................................................


Patch Set 3:

BAD Compatibility Tests Started https://asterix-jenkins.ics.uci.edu/job/asterixbad-compat/2886/

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Change in asterixdb[master]: [NO ISSUE][OTH] Log open file count on unexpected HttpServer...

Posted by "Jenkins (Code Review)" <do...@asterixdb.incubator.apache.org>.

Jenkins has posted comments on this change.

Change subject: [NO ISSUE][OTH] Log open file count on unexpected HttpServer close
......................................................................


Patch Set 4:

Build Started https://asterix-jenkins.ics.uci.edu/job/asterix-verify-storage/3572/ (8/12)

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Change in asterixdb[master]: [NO ISSUE][OTH] Log open file count on unexpected HttpServer...

Posted by "Anon. E. Moose (Code Review)" <do...@asterixdb.incubator.apache.org>.

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

Change subject: [NO ISSUE][OTH] Log open file count on unexpected HttpServer close
......................................................................


Patch Set 5: Contrib+1

Analytics Compatibility Tests Successful
https://goo.gl/9cpEcx : SUCCESS

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Change in asterixdb[master]: [NO ISSUE][OTH] Log open file count on unexpected HttpServer...

Posted by "Jenkins (Code Review)" <do...@asterixdb.incubator.apache.org>.

Jenkins has posted comments on this change.

Change subject: [NO ISSUE][OTH] Log open file count on unexpected HttpServer close
......................................................................


Patch Set 1:

Build Started https://asterix-jenkins.ics.uci.edu/job/asterix-gerrit-source-format/2998/ (2/12)

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Change in asterixdb[master]: [NO ISSUE][OTH] Log open file count on unexpected HttpServer...

Posted by "Anon. E. Moose (Code Review)" <do...@asterixdb.incubator.apache.org>.

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

Change subject: [NO ISSUE][OTH] Log open file count on unexpected HttpServer close
......................................................................


Patch Set 1:

Analytics Compatibility Compilation Successful
https://goo.gl/e1tP7v : SUCCESS

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Change in asterixdb[master]: [NO ISSUE][OTH] Log open file count on unexpected HttpServer...

Posted by "Anon. E. Moose (Code Review)" <do...@asterixdb.incubator.apache.org>.

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

Change subject: [NO ISSUE][OTH] Log open file count on unexpected HttpServer close
......................................................................


Patch Set 2:

Analytics Compatibility Compilation Successful
https://goo.gl/tHgfgy : SUCCESS

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Change in asterixdb[master]: [NO ISSUE][OTH] Log open file count on unexpected HttpServer...

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Change subject: [NO ISSUE][OTH] Log open file count on unexpected HttpServer close
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Patch Set 1:

Build Started https://asterix-jenkins.ics.uci.edu/job/asterix-gerrit-verify-no-installer-app/3486/ (4/12)

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Change in asterixdb[master]: [NO ISSUE][OTH] Log open file count on unexpected HttpServer...

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Change subject: [NO ISSUE][OTH] Log open file count on unexpected HttpServer close
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Patch Set 5:

Build Started https://asterix-jenkins.ics.uci.edu/job/asterix-gerrit-cancellation-test/3029/ (1/12)

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Change in asterixdb[master]: [NO ISSUE][OTH] Log open file count on unexpected HttpServer...

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Change subject: [NO ISSUE][OTH] Log open file count on unexpected HttpServer close
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Patch Set 3:

Build Started https://asterix-jenkins.ics.uci.edu/job/asterix-gerrit-asterix-app-sql-execution/3039/ (9/12)

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Change in asterixdb[master]: [NO ISSUE][OTH] Log open file count on unexpected HttpServer...

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Change subject: [NO ISSUE][OTH] Log open file count on unexpected HttpServer close
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Patch Set 2:

Build Started https://asterix-jenkins.ics.uci.edu/job/asterix-gerrit-asterix-app/3759/ (11/12)

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Change in asterixdb[master]: [NO ISSUE][OTH] Log open file count on unexpected HttpServer...

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Change subject: [NO ISSUE][OTH] Log open file count on unexpected HttpServer close
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Build Started https://asterix-jenkins.ics.uci.edu/job/asterix-gerrit-source-format/2999/ (4/12)

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Change in asterixdb[master]: [NO ISSUE][OTH] Log open file count on unexpected HttpServer...

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Change subject: [NO ISSUE][OTH] Log open file count on unexpected HttpServer close
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Patch Set 5:

Build Started https://asterix-jenkins.ics.uci.edu/job/asterix-verify-storage/3573/ (9/12)

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Change in asterixdb[master]: [NO ISSUE][OTH] Log open file count on unexpected HttpServer...

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Change subject: [NO ISSUE][OTH] Log open file count on unexpected HttpServer close
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Build Started https://asterix-jenkins.ics.uci.edu/job/asterix-gerrit-notopic/8495/ (1/12)

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Change in asterixdb[master]: [NO ISSUE][OTH] Log open file count on unexpected HttpServer...

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Change subject: [NO ISSUE][OTH] Log open file count on unexpected HttpServer close
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Build Started https://asterix-jenkins.ics.uci.edu/job/asterix-gerrit-cancellation-test/3025/ (11/12)

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Change in asterixdb[master]: [NO ISSUE][OTH] Log open file count on unexpected HttpServer...

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Change subject: [NO ISSUE][OTH] Log open file count on unexpected HttpServer close
......................................................................


Patch Set 3:

Build Started https://asterix-jenkins.ics.uci.edu/job/asterix-gerrit-cancellation-test/3027/ (1/12)

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Change in asterixdb[master]: [NO ISSUE][OTH] Log open file count on unexpected HttpServer...

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Change subject: [NO ISSUE][OTH] Log open file count on unexpected HttpServer close
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Patch Set 5:

Build Started https://asterix-jenkins.ics.uci.edu/job/asterix-gerrit-ensure-ancestor/1049/ (6/12)

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Change in asterixdb[master]: [NO ISSUE][OTH] Log open file count on unexpected HttpServer...

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Change subject: [NO ISSUE][OTH] Log open file count on unexpected HttpServer close
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Patch Set 4:

Build Started https://asterix-jenkins.ics.uci.edu/job/asterix-gerrit-asterix-app/3761/ (6/12)

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Change in asterixdb[master]: [NO ISSUE][OTH] Log open file count on unexpected HttpServer...

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Change subject: [NO ISSUE][OTH] Log open file count on unexpected HttpServer close
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Patch Set 4:

Build Started https://asterix-jenkins.ics.uci.edu/job/hyracks-gerrit/2953/ (7/12)

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