Author: jxue
Date: Mon May 11 18:32:11 2020
New Revision: 1877599
URL: http://svn.apache.org/viewvc?rev=1877599&view=rev
Log:
Site checkin for project Apache Helix :: Website
Added:
helix/site-content/0.9.4-docs/
helix/site-content/0.9.4-docs/.htaccess
helix/site-content/0.9.4-docs/Building.html
helix/site-content/0.9.4-docs/Features.html
helix/site-content/0.9.4-docs/JobExample.json
helix/site-content/0.9.4-docs/Metrics.html
helix/site-content/0.9.4-docs/Quickstart.html
helix/site-content/0.9.4-docs/Tutorial.html
helix/site-content/0.9.4-docs/WorkflowExample.json
helix/site-content/0.9.4-docs/auto_exit_maintenance.html
helix/site-content/0.9.4-docs/css/
helix/site-content/0.9.4-docs/css/bootstrap-responsive.min.css
helix/site-content/0.9.4-docs/css/bootstrap.min.css
helix/site-content/0.9.4-docs/css/bootswatch.css
helix/site-content/0.9.4-docs/css/docs.css
helix/site-content/0.9.4-docs/css/lightbox.css
helix/site-content/0.9.4-docs/css/print.css
helix/site-content/0.9.4-docs/css/reflow-skin.css
helix/site-content/0.9.4-docs/css/site.css
helix/site-content/0.9.4-docs/dependencies.html
helix/site-content/0.9.4-docs/dependency-convergence.html
helix/site-content/0.9.4-docs/dependency-info.html
helix/site-content/0.9.4-docs/dependency-management.html
helix/site-content/0.9.4-docs/design_crushed.html
helix/site-content/0.9.4-docs/distribution-management.html
helix/site-content/0.9.4-docs/download.cgi
helix/site-content/0.9.4-docs/download.html
helix/site-content/0.9.4-docs/images/
helix/site-content/0.9.4-docs/images/PFS-Generic.png (with props)
helix/site-content/0.9.4-docs/images/RSYNC_BASED_PFS.png (with props)
helix/site-content/0.9.4-docs/images/TaskFrameworkLayers.png (with props)
helix/site-content/0.9.4-docs/images/UIScreenshot.png (with props)
helix/site-content/0.9.4-docs/images/UIScreenshot2.png (with props)
helix/site-content/0.9.4-docs/images/auto-exit-maintenance.jpg (with
props)
helix/site-content/0.9.4-docs/images/close.gif (with props)
helix/site-content/0.9.4-docs/images/close.png (with props)
helix/site-content/0.9.4-docs/images/design/
helix/site-content/0.9.4-docs/images/design/crushed/
helix/site-content/0.9.4-docs/images/design/crushed/after-using-crushed.png
(with props)
helix/site-content/0.9.4-docs/images/design/crushed/before-using-crush.png
(with props)
helix/site-content/0.9.4-docs/images/design/crushed/classes.png (with
props)
helix/site-content/0.9.4-docs/images/design/crushed/crushed-master-dist.png
(with props)
helix/site-content/0.9.4-docs/images/design/crushed/crushed-partition-dist.png
(with props)
helix/site-content/0.9.4-docs/images/design/crushed/cursh-master-dist.png
(with props)
helix/site-content/0.9.4-docs/images/design/crushed/cursh-partition-dist.png
(with props)
helix/site-content/0.9.4-docs/images/design/crushed/example-cluster-master-dist-after.png
(with props)
helix/site-content/0.9.4-docs/images/design/crushed/example-cluster-master-dist.png
(with props)
helix/site-content/0.9.4-docs/images/design/crushed/example-cluster-partition-dist.png
(with props)
helix/site-content/0.9.4-docs/images/design/crushed/example-movement-on-expansion.png
(with props)
helix/site-content/0.9.4-docs/images/design/crushed/node-down-master-move.png
(with props)
helix/site-content/0.9.4-docs/images/design/crushed/node-down-partition-move.png
(with props)
helix/site-content/0.9.4-docs/images/design/crushed/performance.png (with
props)
helix/site-content/0.9.4-docs/images/loading.gif (with props)
helix/site-content/0.9.4-docs/images/next.png (with props)
helix/site-content/0.9.4-docs/images/prev.png (with props)
helix/site-content/0.9.4-docs/images/quota_InstanceCapacityManager.jpeg
(with props)
helix/site-content/0.9.4-docs/images/quota_intro.png (with props)
helix/site-content/0.9.4-docs/img/
helix/site-content/0.9.4-docs/img/glyphicons-halflings-white.png (with
props)
helix/site-content/0.9.4-docs/img/glyphicons-halflings.png (with props)
helix/site-content/0.9.4-docs/index.html
helix/site-content/0.9.4-docs/integration.html
helix/site-content/0.9.4-docs/issue-tracking.html
helix/site-content/0.9.4-docs/js/
helix/site-content/0.9.4-docs/js/bootstrap.min.js
helix/site-content/0.9.4-docs/js/jquery-1.8.3.min.js
helix/site-content/0.9.4-docs/js/jquery.ba-bbq.min.js
helix/site-content/0.9.4-docs/js/jquery.min.js
helix/site-content/0.9.4-docs/js/jquery.smooth-scroll.min.js
helix/site-content/0.9.4-docs/js/lightbox.js
helix/site-content/0.9.4-docs/js/reflow-skin.js
helix/site-content/0.9.4-docs/license.html
helix/site-content/0.9.4-docs/mail-lists.html
helix/site-content/0.9.4-docs/plugin-management.html
helix/site-content/0.9.4-docs/plugins.html
helix/site-content/0.9.4-docs/privacy-policy.html
helix/site-content/0.9.4-docs/project-info.html
helix/site-content/0.9.4-docs/project-reports.html
helix/site-content/0.9.4-docs/project-summary.html
helix/site-content/0.9.4-docs/quota_scheduling.html
helix/site-content/0.9.4-docs/recipes/
helix/site-content/0.9.4-docs/recipes/lock_manager.html
helix/site-content/0.9.4-docs/recipes/rabbitmq_consumer_group.html
helix/site-content/0.9.4-docs/recipes/rsync_replicated_file_store.html
helix/site-content/0.9.4-docs/recipes/service_discovery.html
helix/site-content/0.9.4-docs/recipes/task_dag_execution.html
helix/site-content/0.9.4-docs/releasenotes/
helix/site-content/0.9.4-docs/releasenotes/release-0.9.4.html
helix/site-content/0.9.4-docs/sonar.html
helix/site-content/0.9.4-docs/source-repository.html
helix/site-content/0.9.4-docs/team-list.html
helix/site-content/0.9.4-docs/tutorial_admin.html
helix/site-content/0.9.4-docs/tutorial_agent.html
helix/site-content/0.9.4-docs/tutorial_controller.html
helix/site-content/0.9.4-docs/tutorial_health.html
helix/site-content/0.9.4-docs/tutorial_messaging.html
helix/site-content/0.9.4-docs/tutorial_participant.html
helix/site-content/0.9.4-docs/tutorial_propstore.html
helix/site-content/0.9.4-docs/tutorial_rebalance.html
helix/site-content/0.9.4-docs/tutorial_rest_service.html
helix/site-content/0.9.4-docs/tutorial_spectator.html
helix/site-content/0.9.4-docs/tutorial_state.html
helix/site-content/0.9.4-docs/tutorial_task_framework.html
helix/site-content/0.9.4-docs/tutorial_task_throttling.html
helix/site-content/0.9.4-docs/tutorial_throttling.html
helix/site-content/0.9.4-docs/tutorial_ui.html
helix/site-content/0.9.4-docs/tutorial_user_content_store.html
helix/site-content/0.9.4-docs/tutorial_user_def_rebalancer.html
helix/site-content/0.9.4-docs/tutorial_yaml.html
helix/site-content/0.9.5-docs/
helix/site-content/0.9.5-docs/.htaccess
helix/site-content/0.9.5-docs/Building.html
helix/site-content/0.9.5-docs/Features.html
helix/site-content/0.9.5-docs/JobExample.json
helix/site-content/0.9.5-docs/Metrics.html
helix/site-content/0.9.5-docs/Quickstart.html
helix/site-content/0.9.5-docs/Tutorial.html
helix/site-content/0.9.5-docs/WorkflowExample.json
helix/site-content/0.9.5-docs/auto_exit_maintenance.html
helix/site-content/0.9.5-docs/css/
helix/site-content/0.9.5-docs/css/bootstrap-responsive.min.css
helix/site-content/0.9.5-docs/css/bootstrap.min.css
helix/site-content/0.9.5-docs/css/bootswatch.css
helix/site-content/0.9.5-docs/css/docs.css
helix/site-content/0.9.5-docs/css/lightbox.css
helix/site-content/0.9.5-docs/css/print.css
helix/site-content/0.9.5-docs/css/reflow-skin.css
helix/site-content/0.9.5-docs/css/site.css
helix/site-content/0.9.5-docs/dependencies.html
helix/site-content/0.9.5-docs/dependency-convergence.html
helix/site-content/0.9.5-docs/dependency-info.html
helix/site-content/0.9.5-docs/dependency-management.html
helix/site-content/0.9.5-docs/design_crushed.html
helix/site-content/0.9.5-docs/distribution-management.html
helix/site-content/0.9.5-docs/download.cgi
helix/site-content/0.9.5-docs/download.html
helix/site-content/0.9.5-docs/images/
helix/site-content/0.9.5-docs/images/PFS-Generic.png (with props)
helix/site-content/0.9.5-docs/images/RSYNC_BASED_PFS.png (with props)
helix/site-content/0.9.5-docs/images/TaskFrameworkLayers.png (with props)
helix/site-content/0.9.5-docs/images/UIScreenshot.png (with props)
helix/site-content/0.9.5-docs/images/UIScreenshot2.png (with props)
helix/site-content/0.9.5-docs/images/auto-exit-maintenance.jpg (with
props)
helix/site-content/0.9.5-docs/images/close.gif (with props)
helix/site-content/0.9.5-docs/images/close.png (with props)
helix/site-content/0.9.5-docs/images/design/
helix/site-content/0.9.5-docs/images/design/crushed/
helix/site-content/0.9.5-docs/images/design/crushed/after-using-crushed.png
(with props)
helix/site-content/0.9.5-docs/images/design/crushed/before-using-crush.png
(with props)
helix/site-content/0.9.5-docs/images/design/crushed/classes.png (with
props)
helix/site-content/0.9.5-docs/images/design/crushed/crushed-master-dist.png
(with props)
helix/site-content/0.9.5-docs/images/design/crushed/crushed-partition-dist.png
(with props)
helix/site-content/0.9.5-docs/images/design/crushed/cursh-master-dist.png
(with props)
helix/site-content/0.9.5-docs/images/design/crushed/cursh-partition-dist.png
(with props)
helix/site-content/0.9.5-docs/images/design/crushed/example-cluster-master-dist-after.png
(with props)
helix/site-content/0.9.5-docs/images/design/crushed/example-cluster-master-dist.png
(with props)
helix/site-content/0.9.5-docs/images/design/crushed/example-cluster-partition-dist.png
(with props)
helix/site-content/0.9.5-docs/images/design/crushed/example-movement-on-expansion.png
(with props)
helix/site-content/0.9.5-docs/images/design/crushed/node-down-master-move.png
(with props)
helix/site-content/0.9.5-docs/images/design/crushed/node-down-partition-move.png
(with props)
helix/site-content/0.9.5-docs/images/design/crushed/performance.png (with
props)
helix/site-content/0.9.5-docs/images/loading.gif (with props)
helix/site-content/0.9.5-docs/images/next.png (with props)
helix/site-content/0.9.5-docs/images/prev.png (with props)
helix/site-content/0.9.5-docs/images/quota_InstanceCapacityManager.jpeg
(with props)
helix/site-content/0.9.5-docs/images/quota_intro.png (with props)
helix/site-content/0.9.5-docs/img/
helix/site-content/0.9.5-docs/img/glyphicons-halflings-white.png (with
props)
helix/site-content/0.9.5-docs/img/glyphicons-halflings.png (with props)
helix/site-content/0.9.5-docs/index.html
helix/site-content/0.9.5-docs/integration.html
helix/site-content/0.9.5-docs/issue-tracking.html
helix/site-content/0.9.5-docs/js/
helix/site-content/0.9.5-docs/js/bootstrap.min.js
helix/site-content/0.9.5-docs/js/jquery-1.8.3.min.js
helix/site-content/0.9.5-docs/js/jquery.ba-bbq.min.js
helix/site-content/0.9.5-docs/js/jquery.min.js
helix/site-content/0.9.5-docs/js/jquery.smooth-scroll.min.js
helix/site-content/0.9.5-docs/js/lightbox.js
helix/site-content/0.9.5-docs/js/reflow-skin.js
helix/site-content/0.9.5-docs/license.html
helix/site-content/0.9.5-docs/mail-lists.html
helix/site-content/0.9.5-docs/plugin-management.html
helix/site-content/0.9.5-docs/plugins.html
helix/site-content/0.9.5-docs/privacy-policy.html
helix/site-content/0.9.5-docs/project-info.html
helix/site-content/0.9.5-docs/project-reports.html
helix/site-content/0.9.5-docs/project-summary.html
helix/site-content/0.9.5-docs/quota_scheduling.html
helix/site-content/0.9.5-docs/recipes/
helix/site-content/0.9.5-docs/recipes/lock_manager.html
helix/site-content/0.9.5-docs/recipes/rabbitmq_consumer_group.html
helix/site-content/0.9.5-docs/recipes/rsync_replicated_file_store.html
helix/site-content/0.9.5-docs/recipes/service_discovery.html
helix/site-content/0.9.5-docs/recipes/task_dag_execution.html
helix/site-content/0.9.5-docs/releasenotes/
helix/site-content/0.9.5-docs/releasenotes/release-0.9.5.html
helix/site-content/0.9.5-docs/sonar.html
helix/site-content/0.9.5-docs/source-repository.html
helix/site-content/0.9.5-docs/team-list.html
helix/site-content/0.9.5-docs/tutorial_admin.html
helix/site-content/0.9.5-docs/tutorial_agent.html
helix/site-content/0.9.5-docs/tutorial_controller.html
helix/site-content/0.9.5-docs/tutorial_health.html
helix/site-content/0.9.5-docs/tutorial_messaging.html
helix/site-content/0.9.5-docs/tutorial_participant.html
helix/site-content/0.9.5-docs/tutorial_propstore.html
helix/site-content/0.9.5-docs/tutorial_rebalance.html
helix/site-content/0.9.5-docs/tutorial_rest_service.html
helix/site-content/0.9.5-docs/tutorial_spectator.html
helix/site-content/0.9.5-docs/tutorial_state.html
helix/site-content/0.9.5-docs/tutorial_task_framework.html
helix/site-content/0.9.5-docs/tutorial_task_throttling.html
helix/site-content/0.9.5-docs/tutorial_throttling.html
helix/site-content/0.9.5-docs/tutorial_ui.html
helix/site-content/0.9.5-docs/tutorial_user_content_store.html
helix/site-content/0.9.5-docs/tutorial_user_def_rebalancer.html
helix/site-content/0.9.5-docs/tutorial_yaml.html
Modified:
helix/site-content/0.6.1-incubating-docs/dependency-convergence.html
helix/site-content/0.6.2-incubating-docs/dependency-convergence.html
helix/site-content/0.6.3-docs/dependency-convergence.html
helix/site-content/0.6.4-docs/dependency-convergence.html
helix/site-content/0.6.5-docs/dependency-convergence.html
helix/site-content/0.6.6-docs/dependency-convergence.html
helix/site-content/0.6.7-docs/dependency-convergence.html
helix/site-content/0.6.8-docs/dependency-convergence.html
helix/site-content/0.6.9-docs/dependency-convergence.html
helix/site-content/0.7.0-incubating-docs/dependency-convergence.html
helix/site-content/0.7.1-docs/dependency-convergence.html
helix/site-content/0.8.0-docs/dependency-convergence.html
helix/site-content/0.8.1-docs/dependency-convergence.html
helix/site-content/0.8.2-docs/dependency-convergence.html
helix/site-content/0.8.3-docs/dependency-convergence.html
helix/site-content/0.8.4-docs/dependency-convergence.html
helix/site-content/0.9.0-docs/dependency-convergence.html
helix/site-content/0.9.1-docs/dependency-convergence.html
helix/site-content/1.0.0-docs/dependency-convergence.html
helix/site-content/dependency-convergence.html
helix/site-content/modules.html
Modified: helix/site-content/0.6.1-incubating-docs/dependency-convergence.html
URL:
http://svn.apache.org/viewvc/helix/site-content/0.6.1-incubating-docs/dependency-convergence.html?rev=1877599&r1=1877598&r2=1877599&view=diff
==============================================================================
--- helix/site-content/0.6.1-incubating-docs/dependency-convergence.html
(original)
+++ helix/site-content/0.6.1-incubating-docs/dependency-convergence.html Mon
May 11 18:32:11 2020
@@ -162,7 +162,7 @@
<thead>
<tr class="a">
<th>Number of modules:</th>
- <td>20</td>
+ <td>22</td>
</tr>
</thead>
<caption>
Modified: helix/site-content/0.6.2-incubating-docs/dependency-convergence.html
URL:
http://svn.apache.org/viewvc/helix/site-content/0.6.2-incubating-docs/dependency-convergence.html?rev=1877599&r1=1877598&r2=1877599&view=diff
==============================================================================
--- helix/site-content/0.6.2-incubating-docs/dependency-convergence.html
(original)
+++ helix/site-content/0.6.2-incubating-docs/dependency-convergence.html Mon
May 11 18:32:11 2020
@@ -162,7 +162,7 @@
<thead>
<tr class="a">
<th>Number of modules:</th>
- <td>20</td>
+ <td>22</td>
</tr>
</thead>
<caption>
Modified: helix/site-content/0.6.3-docs/dependency-convergence.html
URL:
http://svn.apache.org/viewvc/helix/site-content/0.6.3-docs/dependency-convergence.html?rev=1877599&r1=1877598&r2=1877599&view=diff
==============================================================================
--- helix/site-content/0.6.3-docs/dependency-convergence.html (original)
+++ helix/site-content/0.6.3-docs/dependency-convergence.html Mon May 11
18:32:11 2020
@@ -162,7 +162,7 @@
<thead>
<tr class="a">
<th>Number of modules:</th>
- <td>20</td>
+ <td>22</td>
</tr>
</thead>
<caption>
Modified: helix/site-content/0.6.4-docs/dependency-convergence.html
URL:
http://svn.apache.org/viewvc/helix/site-content/0.6.4-docs/dependency-convergence.html?rev=1877599&r1=1877598&r2=1877599&view=diff
==============================================================================
--- helix/site-content/0.6.4-docs/dependency-convergence.html (original)
+++ helix/site-content/0.6.4-docs/dependency-convergence.html Mon May 11
18:32:11 2020
@@ -162,7 +162,7 @@
<thead>
<tr class="a">
<th>Number of modules:</th>
- <td>20</td>
+ <td>22</td>
</tr>
</thead>
<caption>
Modified: helix/site-content/0.6.5-docs/dependency-convergence.html
URL:
http://svn.apache.org/viewvc/helix/site-content/0.6.5-docs/dependency-convergence.html?rev=1877599&r1=1877598&r2=1877599&view=diff
==============================================================================
--- helix/site-content/0.6.5-docs/dependency-convergence.html (original)
+++ helix/site-content/0.6.5-docs/dependency-convergence.html Mon May 11
18:32:11 2020
@@ -162,7 +162,7 @@
<thead>
<tr class="a">
<th>Number of modules:</th>
- <td>20</td>
+ <td>22</td>
</tr>
</thead>
<caption>
Modified: helix/site-content/0.6.6-docs/dependency-convergence.html
URL:
http://svn.apache.org/viewvc/helix/site-content/0.6.6-docs/dependency-convergence.html?rev=1877599&r1=1877598&r2=1877599&view=diff
==============================================================================
--- helix/site-content/0.6.6-docs/dependency-convergence.html (original)
+++ helix/site-content/0.6.6-docs/dependency-convergence.html Mon May 11
18:32:11 2020
@@ -162,7 +162,7 @@
<thead>
<tr class="a">
<th>Number of modules:</th>
- <td>20</td>
+ <td>22</td>
</tr>
</thead>
<caption>
Modified: helix/site-content/0.6.7-docs/dependency-convergence.html
URL:
http://svn.apache.org/viewvc/helix/site-content/0.6.7-docs/dependency-convergence.html?rev=1877599&r1=1877598&r2=1877599&view=diff
==============================================================================
--- helix/site-content/0.6.7-docs/dependency-convergence.html (original)
+++ helix/site-content/0.6.7-docs/dependency-convergence.html Mon May 11
18:32:11 2020
@@ -162,7 +162,7 @@
<thead>
<tr class="a">
<th>Number of modules:</th>
- <td>20</td>
+ <td>22</td>
</tr>
</thead>
<caption>
Modified: helix/site-content/0.6.8-docs/dependency-convergence.html
URL:
http://svn.apache.org/viewvc/helix/site-content/0.6.8-docs/dependency-convergence.html?rev=1877599&r1=1877598&r2=1877599&view=diff
==============================================================================
--- helix/site-content/0.6.8-docs/dependency-convergence.html (original)
+++ helix/site-content/0.6.8-docs/dependency-convergence.html Mon May 11
18:32:11 2020
@@ -162,7 +162,7 @@
<thead>
<tr class="a">
<th>Number of modules:</th>
- <td>20</td>
+ <td>22</td>
</tr>
</thead>
<caption>
Modified: helix/site-content/0.6.9-docs/dependency-convergence.html
URL:
http://svn.apache.org/viewvc/helix/site-content/0.6.9-docs/dependency-convergence.html?rev=1877599&r1=1877598&r2=1877599&view=diff
==============================================================================
--- helix/site-content/0.6.9-docs/dependency-convergence.html (original)
+++ helix/site-content/0.6.9-docs/dependency-convergence.html Mon May 11
18:32:11 2020
@@ -162,7 +162,7 @@
<thead>
<tr class="a">
<th>Number of modules:</th>
- <td>20</td>
+ <td>22</td>
</tr>
</thead>
<caption>
Modified: helix/site-content/0.7.0-incubating-docs/dependency-convergence.html
URL:
http://svn.apache.org/viewvc/helix/site-content/0.7.0-incubating-docs/dependency-convergence.html?rev=1877599&r1=1877598&r2=1877599&view=diff
==============================================================================
--- helix/site-content/0.7.0-incubating-docs/dependency-convergence.html
(original)
+++ helix/site-content/0.7.0-incubating-docs/dependency-convergence.html Mon
May 11 18:32:11 2020
@@ -163,7 +163,7 @@
<thead>
<tr class="a">
<th>Number of modules:</th>
- <td>20</td>
+ <td>22</td>
</tr>
</thead>
<caption>
Modified: helix/site-content/0.7.1-docs/dependency-convergence.html
URL:
http://svn.apache.org/viewvc/helix/site-content/0.7.1-docs/dependency-convergence.html?rev=1877599&r1=1877598&r2=1877599&view=diff
==============================================================================
--- helix/site-content/0.7.1-docs/dependency-convergence.html (original)
+++ helix/site-content/0.7.1-docs/dependency-convergence.html Mon May 11
18:32:11 2020
@@ -163,7 +163,7 @@
<thead>
<tr class="a">
<th>Number of modules:</th>
- <td>20</td>
+ <td>22</td>
</tr>
</thead>
<caption>
Modified: helix/site-content/0.8.0-docs/dependency-convergence.html
URL:
http://svn.apache.org/viewvc/helix/site-content/0.8.0-docs/dependency-convergence.html?rev=1877599&r1=1877598&r2=1877599&view=diff
==============================================================================
--- helix/site-content/0.8.0-docs/dependency-convergence.html (original)
+++ helix/site-content/0.8.0-docs/dependency-convergence.html Mon May 11
18:32:11 2020
@@ -162,7 +162,7 @@
<thead>
<tr class="a">
<th>Number of modules:</th>
- <td>20</td>
+ <td>22</td>
</tr>
</thead>
<caption>
Modified: helix/site-content/0.8.1-docs/dependency-convergence.html
URL:
http://svn.apache.org/viewvc/helix/site-content/0.8.1-docs/dependency-convergence.html?rev=1877599&r1=1877598&r2=1877599&view=diff
==============================================================================
--- helix/site-content/0.8.1-docs/dependency-convergence.html (original)
+++ helix/site-content/0.8.1-docs/dependency-convergence.html Mon May 11
18:32:11 2020
@@ -162,7 +162,7 @@
<thead>
<tr class="a">
<th>Number of modules:</th>
- <td>20</td>
+ <td>22</td>
</tr>
</thead>
<caption>
Modified: helix/site-content/0.8.2-docs/dependency-convergence.html
URL:
http://svn.apache.org/viewvc/helix/site-content/0.8.2-docs/dependency-convergence.html?rev=1877599&r1=1877598&r2=1877599&view=diff
==============================================================================
--- helix/site-content/0.8.2-docs/dependency-convergence.html (original)
+++ helix/site-content/0.8.2-docs/dependency-convergence.html Mon May 11
18:32:11 2020
@@ -162,7 +162,7 @@
<thead>
<tr class="a">
<th>Number of modules:</th>
- <td>20</td>
+ <td>22</td>
</tr>
</thead>
<caption>
Modified: helix/site-content/0.8.3-docs/dependency-convergence.html
URL:
http://svn.apache.org/viewvc/helix/site-content/0.8.3-docs/dependency-convergence.html?rev=1877599&r1=1877598&r2=1877599&view=diff
==============================================================================
--- helix/site-content/0.8.3-docs/dependency-convergence.html (original)
+++ helix/site-content/0.8.3-docs/dependency-convergence.html Mon May 11
18:32:11 2020
@@ -162,7 +162,7 @@
<thead>
<tr class="a">
<th>Number of modules:</th>
- <td>20</td>
+ <td>22</td>
</tr>
</thead>
<caption>
Modified: helix/site-content/0.8.4-docs/dependency-convergence.html
URL:
http://svn.apache.org/viewvc/helix/site-content/0.8.4-docs/dependency-convergence.html?rev=1877599&r1=1877598&r2=1877599&view=diff
==============================================================================
--- helix/site-content/0.8.4-docs/dependency-convergence.html (original)
+++ helix/site-content/0.8.4-docs/dependency-convergence.html Mon May 11
18:32:11 2020
@@ -162,7 +162,7 @@
<thead>
<tr class="a">
<th>Number of modules:</th>
- <td>20</td>
+ <td>22</td>
</tr>
</thead>
<caption>
Modified: helix/site-content/0.9.0-docs/dependency-convergence.html
URL:
http://svn.apache.org/viewvc/helix/site-content/0.9.0-docs/dependency-convergence.html?rev=1877599&r1=1877598&r2=1877599&view=diff
==============================================================================
--- helix/site-content/0.9.0-docs/dependency-convergence.html (original)
+++ helix/site-content/0.9.0-docs/dependency-convergence.html Mon May 11
18:32:11 2020
@@ -162,7 +162,7 @@
<thead>
<tr class="a">
<th>Number of modules:</th>
- <td>20</td>
+ <td>22</td>
</tr>
</thead>
<caption>
Modified: helix/site-content/0.9.1-docs/dependency-convergence.html
URL:
http://svn.apache.org/viewvc/helix/site-content/0.9.1-docs/dependency-convergence.html?rev=1877599&r1=1877598&r2=1877599&view=diff
==============================================================================
--- helix/site-content/0.9.1-docs/dependency-convergence.html (original)
+++ helix/site-content/0.9.1-docs/dependency-convergence.html Mon May 11
18:32:11 2020
@@ -162,7 +162,7 @@
<thead>
<tr class="a">
<th>Number of modules:</th>
- <td>20</td>
+ <td>22</td>
</tr>
</thead>
<caption>
Added: helix/site-content/0.9.4-docs/.htaccess
URL:
http://svn.apache.org/viewvc/helix/site-content/0.9.4-docs/.htaccess?rev=1877599&view=auto
==============================================================================
--- helix/site-content/0.9.4-docs/.htaccess (added)
+++ helix/site-content/0.9.4-docs/.htaccess Mon May 11 18:32:11 2020
@@ -0,0 +1,20 @@
+#
+# 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.
+#
+
+Redirect /download.html /download.cgi
Added: helix/site-content/0.9.4-docs/Building.html
URL:
http://svn.apache.org/viewvc/helix/site-content/0.9.4-docs/Building.html?rev=1877599&view=auto
==============================================================================
--- helix/site-content/0.9.4-docs/Building.html (added)
+++ helix/site-content/0.9.4-docs/Building.html Mon May 11 18:32:11 2020
@@ -0,0 +1,267 @@
+
+<!DOCTYPE html>
+<!--
+ Generated by Apache Maven Doxia at 2020-05-11
+ Rendered using Maven Reflow Skin 1.0.0
(http://andriusvelykis.github.com/reflow-maven-skin)
+-->
+<html xml:lang="en" lang="en">
+
+ <head>
+ <meta charset="UTF-8" />
+ <title>Apache Helix - Build Instructions</title>
+ <meta name="viewport" content="width=device-width,
initial-scale=1.0" />
+ <meta name="description" content="" />
+ <meta http-equiv="content-language" content="en" />
+
+ <link href="./css/bootstrap.min.css" rel="stylesheet" />
+ <link href="./css/bootstrap-responsive.min.css"
rel="stylesheet" />
+ <link href="./css/docs.css" rel="stylesheet" />
+ <link href="./css/reflow-skin.css" rel="stylesheet" />
+
+
+ <link href="./css/lightbox.css" rel="stylesheet" />
+
+ <link href="./css/site.css" rel="stylesheet" />
+ <link href="./css/print.css" rel="stylesheet" media="print" />
+
+ <!-- Le HTML5 shim, for IE6-8 support of HTML5 elements -->
+ <!--[if lt IE 9]>
+ <script
src="http://html5shim.googlecode.com/svn/trunk/html5.js";></script>
+ <![endif]-->
+
+<script type="text/javascript">var _gaq = _gaq || [];
+ _gaq.push(['_setAccount', 'UA-3211522-12']);
+ _gaq.push(['_trackPageview']);
+
+ (function() {
+ var ga = document.createElement('script'); ga.type =
'text/javascript'; ga.async = true;
+ ga.src = ('https:' == document.location.protocol ? 'https://ssl' :
'http://www') + '.google-analytics.com/ga.js';
+ var s = document.getElementsByTagName('script')[0];
s.parentNode.insertBefore(ga, s);
+ })();</script>
+ </head>
+
+ <body class="page-building project-094-docs" data-spy="scroll"
data-offset="60" data-target="#toc-scroll-target">
+
+ <div class="navbar navbar-fixed-top">
+ <div class="navbar-inner">
+ <div class="container">
+ <a class="btn btn-navbar"
data-toggle="collapse" data-target=".nav-collapse">
+ <span class="icon-bar"></span>
+ <span class="icon-bar"></span>
+ <span class="icon-bar"></span>
+ </a>
+ <a class="brand" href="..">Apache
Helix</a>
+ <div class="nav-collapse">
+ <ul class="nav pull-right">
+ <li><a
href="index.html" title="Helix 0.9.4">Helix 0.9.4 </a></li>
+ <li class="dropdown
active">
+ <a href="#"
class="dropdown-toggle" data-toggle="dropdown">Get Helix <b
class="caret"></b></a>
+ <ul
class="dropdown-menu">
+ <li><a
href="download.html" title="Download">Download </a></li>
+ <li
class="active"><a href="" title="Building">Building </a></li>
+ <li><a
href="releasenotes/release-0.9.4.html" title="Release Notes">Release Notes
</a></li>
+ </ul>
+ </li>
+ <li class="dropdown">
+ <a href="#"
class="dropdown-toggle" data-toggle="dropdown">Hands-On <b
class="caret"></b></a>
+ <ul
class="dropdown-menu">
+ <li><a
href="Quickstart.html" title="Quick Start">Quick Start </a></li>
+ <li><a
href="Tutorial.html" title="Tutorial">Tutorial </a></li>
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href="../javadocs/0.9.4" title="Javadocs">Javadocs </a></li>
+ </ul>
+ </li>
+ <li class="dropdown">
+ <a href="#"
class="dropdown-toggle" data-toggle="dropdown">Recipes <b class="caret"></b></a>
+ <ul
class="dropdown-menu">
+ <li><a
href="recipes/lock_manager.html" title="Distributed lock manager">Distributed
lock manager </a></li>
+ <li><a
href="recipes/rabbitmq_consumer_group.html" title="Rabbit MQ consumer
group">Rabbit MQ consumer group </a></li>
+ <li><a
href="recipes/rsync_replicated_file_store.html" title="Rsync replicated file
store">Rsync replicated file store </a></li>
+ <li><a
href="recipes/service_discovery.html" title="Service discovery">Service
discovery </a></li>
+ <li><a
href="recipes/task_dag_execution.html" title="Distributed task DAG
execution">Distributed task DAG execution </a></li>
+ </ul>
+ </li>
+ </ul>
+ </div><!--/.nav-collapse -->
+ </div>
+ </div>
+ </div>
+
+ <div class="container">
+
+ <!-- Masthead
+ ================================================== -->
+ <header class="jumbotron subhead">
+ <div class="row" id="banner">
+ <div class="span12">
+ <div class="pull-left">
+ <a href="../" id="bannerLeft"><img
src="../images/helix-logo.jpg" alt='"''"' /></a>
+ <p class="lead">A cluster management
framework for partitioned and replicated distributed resources</p>
+ </div>
+ <div class="pull-right">
+ <a href="http://www.apache.org/";
id="bannerRight"><img src="../images/feather_small.gif" alt='"''"' /></a>
+ </div>
+ </div>
+ </div>
+ <div>
+ <ul class="breadcrumb">
+ <li><a href="../" title="Apache Helix">Apache
Helix </a></li>
+ <li class="divider">/</li>
+ <li><a href="./" title="Release 0.9.4">Release
0.9.4 </a></li>
+ <li class="divider">/</li>
+ <li>Build Instructions</li>
+ <li class="publishDate version-date
pull-right">Last Published: 2020-05-11</li>
+ </ul>
+ </div>
+ </header>
+
+ <div class="main-body">
+ <div class="row">
+ <div class="span12">
+ <div class="body-content">
+<!-- -
+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. -->
+<div class="section">
+ <div class="page-header">
+ <h2 id="Build_Instructions">Build Instructions</h2>
+ </div>
+ <div class="section">
+ <h3 id="From_Source">From Source</h3>
+ <p>Requirements: JDK 1.8+, Maven 3.5.0+</p>
+ <div class="source">
+ <pre>git clone https://git-wip-us.apache.org/repos/asf/helix.git
+cd helix
+git checkout tags/helix-0.9.4
+mvn install package -DskipTests
+</pre>
+ </div>
+ </div>
+ <div class="section">
+ <h3 id="Maven_Dependency">Maven Dependency</h3>
+ <div class="source">
+ <pre><dependency>
+ <groupId>org.apache.helix</groupId>
+ <artifactId>helix-core</artifactId>
+ <version>0.9.4</version>
+</dependency>
+</pre>
+ </div>
+ </div>
+</div>
+ </div>
+ </div>
+ </div>
+ </div>
+
+ </div><!-- /container -->
+
+ <!-- Footer
+ ================================================== -->
+ <footer class="well">
+ <div class="container">
+ <div class="row">
+ <div class="span3 bottom-nav">
+ <ul class="nav nav-list">
+ <li class="nav-header">Get
Helix</li>
+ <li>
+ <a href="download.html"
title="Download">Download </a>
+ </li>
+ <li class="active">
+ <a href="#"
title="Building">Building </a>
+ </li>
+ <li>
+ <a
href="releasenotes/release-0.9.4.html" title="Release Notes">Release Notes </a>
+ </li>
+ </ul>
+ </div>
+ <div class="span3 bottom-nav">
+ <ul class="nav nav-list">
+ <li
class="nav-header">Hands-On</li>
+ <li>
+ <a
href="Quickstart.html" title="Quick Start">Quick Start </a>
+ </li>
+ <li>
+ <a href="Tutorial.html"
title="Tutorial">Tutorial </a>
+ </li>
+ <li>
+ <a
href="../javadocs/0.9.4" title="Javadocs">Javadocs </a>
+ </li>
+ </ul>
+ </div>
+ <div class="span3 bottom-nav">
+ <ul class="nav nav-list">
+ <li
class="nav-header">Recipes</li>
+ <li>
+ <a
href="recipes/lock_manager.html" title="Distributed lock manager">Distributed
lock manager </a>
+ </li>
+ <li>
+ <a
href="recipes/rabbitmq_consumer_group.html" title="Rabbit MQ consumer
group">Rabbit MQ consumer group </a>
+ </li>
+ <li>
+ <a
href="recipes/rsync_replicated_file_store.html" title="Rsync replicated file
store">Rsync replicated file store </a>
+ </li>
+ <li>
+ <a
href="recipes/service_discovery.html" title="Service discovery">Service
discovery </a>
+ </li>
+ <li>
+ <a
href="recipes/task_dag_execution.html" title="Distributed task DAG
execution">Distributed task DAG execution </a>
+ </li>
+ </ul>
+ </div>
+ </div>
+ </div>
+ </footer>
+
+ <div class="container subfooter">
+ <div class="row">
+ <div class="span12">
+ <p class="pull-right"><a href="#">Back to
top</a></p>
+ <p class="copyright">Copyright ©2020 <a
href="http://www.apache.org/";>The Apache Software Foundation</a>. All Rights
Reserved.</p>
+ <p><a
href="http://github.com/andriusvelykis/reflow-maven-skin"; title="Reflow Maven
skin">Reflow Maven skin</a> by <a href="http://andrius.velykis.lt";
target="_blank" title="Andrius Velykis">Andrius Velykis</a>.</p>
+
+<div class="row span16">
+ <div>Apache Helix, Apache, the Apache feather logo, and the Apache Helix
project logos are trademarks of The Apache Software Foundation.
+ All other marks mentioned may be trademarks or registered trademarks
of their respective owners.</div>
+ <a href="http://helix.apache.org/0.9.4-docs/privacy-policy.html";>Privacy
Policy</a>
+</div> </div>
+ </div>
+ </div>
+
+ <!-- Le javascript
+ ================================================== -->
+ <!-- Placed at the end of the document so the pages load faster -->
+
+ <!-- Fallback jQuery loading from Google CDN:
+
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-->
+ <script type="text/javascript"
src="http://ajax.googleapis.com/ajax/libs/jquery/1.8.3/jquery.min.js";></script>
+ <script type="text/javascript">
+ if (typeof jQuery == 'undefined')
+ {
+ document.write(unescape("%3Cscript
src='./js/jquery-1.8.3.min.js' type='text/javascript'%3E%3C/script%3E"));
+ }
+ </script>
+
+ <script src="./js/bootstrap.min.js"></script>
+ <script src="./js/lightbox.js"></script>
+ <script src="./js/jquery.smooth-scroll.min.js"></script>
+ <!-- back button support for smooth scroll -->
+ <script src="./js/jquery.ba-bbq.min.js"></script>
+
+ <script src="./js/reflow-skin.js"></script>
+
+ </body>
+</html>
\ No newline at end of file
Added: helix/site-content/0.9.4-docs/Features.html
URL:
http://svn.apache.org/viewvc/helix/site-content/0.9.4-docs/Features.html?rev=1877599&view=auto
==============================================================================
--- helix/site-content/0.9.4-docs/Features.html (added)
+++ helix/site-content/0.9.4-docs/Features.html Mon May 11 18:32:11 2020
@@ -0,0 +1,475 @@
+
+<!DOCTYPE html>
+<!--
+ Generated by Apache Maven Doxia at 2020-05-11
+ Rendered using Maven Reflow Skin 1.0.0
(http://andriusvelykis.github.com/reflow-maven-skin)
+-->
+<html xml:lang="en" lang="en">
+
+ <head>
+ <meta charset="UTF-8" />
+ <title>Apache Helix - Features</title>
+ <meta name="viewport" content="width=device-width,
initial-scale=1.0" />
+ <meta name="description" content="" />
+ <meta http-equiv="content-language" content="en" />
+
+ <link href="./css/bootstrap.min.css" rel="stylesheet" />
+ <link href="./css/bootstrap-responsive.min.css"
rel="stylesheet" />
+ <link href="./css/docs.css" rel="stylesheet" />
+ <link href="./css/reflow-skin.css" rel="stylesheet" />
+
+
+ <link href="./css/lightbox.css" rel="stylesheet" />
+
+ <link href="./css/site.css" rel="stylesheet" />
+ <link href="./css/print.css" rel="stylesheet" media="print" />
+
+ <!-- Le HTML5 shim, for IE6-8 support of HTML5 elements -->
+ <!--[if lt IE 9]>
+ <script
src="http://html5shim.googlecode.com/svn/trunk/html5.js";></script>
+ <![endif]-->
+
+<script type="text/javascript">var _gaq = _gaq || [];
+ _gaq.push(['_setAccount', 'UA-3211522-12']);
+ _gaq.push(['_trackPageview']);
+
+ (function() {
+ var ga = document.createElement('script'); ga.type =
'text/javascript'; ga.async = true;
+ ga.src = ('https:' == document.location.protocol ? 'https://ssl' :
'http://www') + '.google-analytics.com/ga.js';
+ var s = document.getElementsByTagName('script')[0];
s.parentNode.insertBefore(ga, s);
+ })();</script>
+ </head>
+
+ <body class="page-features project-094-docs" data-spy="scroll"
data-offset="60" data-target="#toc-scroll-target">
+
+ <div class="navbar navbar-fixed-top">
+ <div class="navbar-inner">
+ <div class="container">
+ <a class="btn btn-navbar"
data-toggle="collapse" data-target=".nav-collapse">
+ <span class="icon-bar"></span>
+ <span class="icon-bar"></span>
+ <span class="icon-bar"></span>
+ </a>
+ <a class="brand" href="..">Apache
Helix</a>
+ <div class="nav-collapse">
+ <ul class="nav pull-right">
+ <li><a
href="index.html" title="Helix 0.9.4">Helix 0.9.4 </a></li>
+ <li class="dropdown">
+ <a href="#"
class="dropdown-toggle" data-toggle="dropdown">Get Helix <b
class="caret"></b></a>
+ <ul
class="dropdown-menu">
+ <li><a
href="download.html" title="Download">Download </a></li>
+ <li><a
href="Building.html" title="Building">Building </a></li>
+ <li><a
href="releasenotes/release-0.9.4.html" title="Release Notes">Release Notes
</a></li>
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+ </li>
+ <li class="dropdown">
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class="caret"></b></a>
+ <ul
class="dropdown-menu">
+ <li><a
href="Quickstart.html" title="Quick Start">Quick Start </a></li>
+ <li><a
href="Tutorial.html" title="Tutorial">Tutorial </a></li>
+ <li><a
href="../javadocs/0.9.4" title="Javadocs">Javadocs </a></li>
+ </ul>
+ </li>
+ <li class="dropdown">
+ <a href="#"
class="dropdown-toggle" data-toggle="dropdown">Recipes <b class="caret"></b></a>
+ <ul
class="dropdown-menu">
+ <li><a
href="recipes/lock_manager.html" title="Distributed lock manager">Distributed
lock manager </a></li>
+ <li><a
href="recipes/rabbitmq_consumer_group.html" title="Rabbit MQ consumer
group">Rabbit MQ consumer group </a></li>
+ <li><a
href="recipes/rsync_replicated_file_store.html" title="Rsync replicated file
store">Rsync replicated file store </a></li>
+ <li><a
href="recipes/service_discovery.html" title="Service discovery">Service
discovery </a></li>
+ <li><a
href="recipes/task_dag_execution.html" title="Distributed task DAG
execution">Distributed task DAG execution </a></li>
+ </ul>
+ </li>
+ </ul>
+ </div><!--/.nav-collapse -->
+ </div>
+ </div>
+ </div>
+
+ <div class="container">
+
+ <!-- Masthead
+ ================================================== -->
+ <header class="jumbotron subhead">
+ <div class="row" id="banner">
+ <div class="span12">
+ <div class="pull-left">
+ <a href="../" id="bannerLeft"><img
src="../images/helix-logo.jpg" alt='"''"' /></a>
+ <p class="lead">A cluster management
framework for partitioned and replicated distributed resources</p>
+ </div>
+ <div class="pull-right">
+ <a href="http://www.apache.org/";
id="bannerRight"><img src="../images/feather_small.gif" alt='"''"' /></a>
+ </div>
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+ </div>
+ <div>
+ <ul class="breadcrumb">
+ <li><a href="../" title="Apache Helix">Apache
Helix </a></li>
+ <li class="divider">/</li>
+ <li><a href="./" title="Release 0.9.4">Release
0.9.4 </a></li>
+ <li class="divider">/</li>
+ <li> Features</li>
+ <li class="publishDate version-date
pull-right">Last Published: 2020-05-11</li>
+ </ul>
+ </div>
+ </header>
+
+ <div class="main-body">
+ <div class="row">
+ <div class="span12">
+ <div class="body-content">
+<!-- -
+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. -->
+<p></p>
+<div class="section">
+ <div class="page-header">
+ <h2 id="Features">Features</h2>
+ </div>
+ <div class="section">
+ <h3 id="CONFIGURING_IDEALSTATE">CONFIGURING IDEALSTATE</h3>
+ <p>Read concepts page for definition of Idealstate.</p>
+ <p>The placement of partitions in a DDS is very critical for reliability and
scalability of the system. For example, when a node fails, it is important that
the partitions hosted on that node are reallocated evenly among the remaining
nodes. Consistent hashing is one such algorithm that can guarantee this. Helix
by default comes with a variant of consistent hashing based of the RUSH
algorithm. </p>
+ <p>This means given a number of partitions, replicas and number of nodes
Helix does the automatic assignment of partition to nodes such that</p>
+ <ul>
+ <li>Each node has the same number of partitions and replicas of the same
partition do not stay on the same node.</li>
+ <li>When a node fails, the partitions will be equally distributed among the
remaining nodes</li>
+ <li>When new nodes are added, the number of partitions moved will be
minimized along with satisfying the above two criteria.</li>
+ </ul>
+ <p>Helix provides multiple ways to control the placement and state of a
replica. </p>
+ <div class="source">
+ <pre> |AUTO REBALANCE| AUTO | CUSTOM |
+ -----------------------------------------
+ LOCATION | HELIX | APP | APP |
+ -----------------------------------------
+ STATE | HELIX | HELIX | APP |
+ -----------------------------------------
+</pre>
+ </div>
+ <div class="section">
+ <h4 id="HELIX_EXECUTION_MODE">HELIX EXECUTION MODE</h4>
+ <p>Idealstate is defined as the state of the DDS when all nodes are up and
running and healthy. Helix uses this as the target state of the system and
computes the appropriate transitions needed in the system to bring it to a
stable state. </p>
+ <p>Helix supports 3 different execution modes which allows application to
explicitly control the placement and state of the replica.</p>
+ <div class="section">
+ <h5 id="AUTO_REBALANCE">AUTO_REBALANCE</h5>
+ <p>When the idealstate mode is set to AUTO_REBALANCE, Helix controls both
the location of the replica along with the state. This option is useful for
applications where creation of a replica is not expensive. Example</p>
+ <div class="source">
+ <pre>{
+ "id" : "MyResource",
+ "simpleFields" : {
+ "IDEAL_STATE_MODE" : "AUTO_REBALANCE",
+ "NUM_PARTITIONS" : "3",
+ "REPLICAS" : "2",
+ "STATE_MODEL_DEF_REF" : "MasterSlave",
+ }
+ "listFields" : {
+ "MyResource_0" : [],
+ "MyResource_1" : [],
+ "MyResource_2" : []
+ },
+ "mapFields" : {
+ }
+}
+</pre>
+ </div>
+ <p>If there are 3 nodes in the cluster, then Helix will internally compute
the ideal state as </p>
+ <div class="source">
+ <pre>{
+ "id" : "MyResource",
+ "simpleFields" : {
+ "NUM_PARTITIONS" : "3",
+ "REPLICAS" : "2",
+ "STATE_MODEL_DEF_REF" : "MasterSlave",
+ },
+ "mapFields" : {
+ "MyResource_0" : {
+ "N1" : "MASTER",
+ "N2" : "SLAVE",
+ },
+ "MyResource_1" : {
+ "N2" : "MASTER",
+ "N3" : "SLAVE",
+ },
+ "MyResource_2" : {
+ "N3" : "MASTER",
+ "N1" : "SLAVE",
+ }
+ }
+}
+</pre>
+ </div>
+ <p>Another typical example is evenly distributing a group of tasks among
the currently alive processes. For example, if there are 60 tasks and 4 nodes,
Helix assigns 15 tasks to each node. When one node fails Helix redistributes
its 15 tasks to the remaining 3 nodes. Similarly, if a node is added, Helix
re-allocates 3 tasks from each of the 4 nodes to the 5th node. </p>
+ </div>
+ </div>
+ <div class="section">
+ <h4 id="AUTO">AUTO</h4>
+ <p>When the idealstate mode is set to AUTO, Helix only controls STATE of
the replicas where as the location of the partition is controlled by
application. Example: The below idealstate indicates thats âMyResource_0â
must be only on node1 and node2. But gives the control of assigning the STATE
to Helix.</p>
+ <div class="source">
+ <pre>{
+ "id" : "MyResource",
+ "simpleFields" : {
+ "IDEAL_STATE_MODE" : "AUTO",
+ "NUM_PARTITIONS" : "3",
+ "REPLICAS" : "2",
+ "STATE_MODEL_DEF_REF" : "MasterSlave",
+ }
+ "listFields" : {
+ "MyResource_0" : [node1, node2],
+ "MyResource_1" : [node2, node3],
+ "MyResource_2" : [node3, node1]
+ },
+ "mapFields" : {
+ }
+}
+</pre>
+ </div>
+ <p>In this mode when node1 fails, unlike in AUTO-REBALANCE mode the
partition is not moved from node1 to others nodes in the cluster. Instead,
Helix will decide to change the state of MyResource_0 in N2 based on the system
constraints. For example, if a system constraint specified that there should be
1 Master and if the Master failed, then node2 will be made the new master. </p>
+ </div>
+ <div class="section">
+ <h4 id="CUSTOM">CUSTOM</h4>
+ <p>Helix offers a third mode called CUSTOM, in which application can
completely control the placement and state of each replica. Applications will
have to implement an interface that Helix will invoke when the cluster state
changes. Within this callback, the application can recompute the idealstate.
Helix will then issue appropriate transitions such that Idealstate and
Currentstate converges.</p>
+ <div class="source">
+ <pre>{
+ "id" : "MyResource",
+ "simpleFields" : {
+ "IDEAL_STATE_MODE" : "CUSTOM",
+ "NUM_PARTITIONS" : "3",
+ "REPLICAS" : "2",
+ "STATE_MODEL_DEF_REF" : "MasterSlave",
+ },
+ "mapFields" : {
+ "MyResource_0" : {
+ "N1" : "MASTER",
+ "N2" : "SLAVE",
+ },
+ "MyResource_1" : {
+ "N2" : "MASTER",
+ "N3" : "SLAVE",
+ },
+ "MyResource_2" : {
+ "N3" : "MASTER",
+ "N1" : "SLAVE",
+ }
+ }
+}
+</pre>
+ </div>
+ <p>For example, the current state of the system might be âMyResource_0â
-> {N1:MASTER,N2:SLAVE} and the application changes the ideal state to
âMyResource_0â -> {N1:SLAVE,N2:MASTER}. Helix will not blindly issue
MASTERâ>SLAVE to N1 and SLAVEâ>MASTER to N2 in parallel since it
might result in a transient state where both N1 and N2 are masters. Helix will
first issue MASTERâ>SLAVE to N1 and after its completed it will issue
SLAVEâ>MASTER to N2. </p>
+ </div>
+ </div>
+ <div class="section">
+ <h3 id="State_Machine_Configuration">State Machine Configuration</h3>
+ <p>Helix comes with 3 default state models that are most commonly used. Its
possible to have multiple state models in a cluster. Every resource that is
added should have a reference to the state model. </p>
+ <ul>
+ <li>MASTER-SLAVE: Has 3 states OFFLINE,SLAVE,MASTER. Max masters is 1.
Slaves will be based on the replication factor. Replication factor can be
specified while adding the resource</li>
+ <li>ONLINE-OFFLINE: Has 2 states OFFLINE and ONLINE. Very simple state
model and most applications start off with this state model.</li>
+ <li>LEADER-STANDBY:1 Leader and many stand bys. In general the standbyâs
are idle.</li>
+ </ul>
+ <p>Apart from providing the state machine configuration, one can specify the
constraints of states and transitions.</p>
+ <p>For example one can say Master:1. Max number of replicas in Master state
at any time is 1. OFFLINE-SLAVE:5 Max number of Offline-Slave transitions that
can happen concurrently in the system</p>
+ <p>STATE PRIORITY Helix uses greedy approach to satisfy the state
constraints. For example if the state machine configuration says it needs 1
master and 2 slaves but only 1 node is active, Helix must promote it to master.
This behavior is achieved by providing the state priority list as
MASTER,SLAVE.</p>
+ <p>STATE TRANSITION PRIORITY Helix tries to fire as many transitions as
possible in parallel to reach the stable state without violating constraints.
By default Helix simply sorts the transitions alphabetically and fires as many
as it can without violating the constraints. One can control this by overriding
the priority order.</p>
+ </div>
+ <div class="section">
+ <h3 id="Config_management">Config management</h3>
+ <p>Helix allows applications to store application specific properties. The
configuration can have different scopes.</p>
+ <ul>
+ <li>Cluster</li>
+ <li>Node specific</li>
+ <li>Resource specific</li>
+ <li>Partition specific</li>
+ </ul>
+ <p>Helix also provides notifications when any configs are changed. This
allows applications to support dynamic configuration changes.</p>
+ <p>See HelixManager.getConfigAccessor for more info</p>
+ </div>
+ <div class="section">
+ <h3 id="Intra_cluster_messaging_api">Intra cluster messaging api</h3>
+ <p>This is an interesting feature which is quite useful in practice. Often
times, nodes in DDS requires a mechanism to interact with each other. One such
requirement is a process of bootstrapping a replica.</p>
+ <p>Consider a search system use case where the index replica starts up and
it does not have an index. One of the commonly used solutions is to get the
index from a common location or to copy the index from another replica. Helix
provides a messaging api, that can be used to talk to other nodes in the
system. The value added that Helix provides here is, message recipient can be
specified in terms of resource, partition, state and Helix ensures that the
message is delivered to all of the required recipients. In this particular use
case, the instance can specify the recipient criteria as all replicas of P1.
Since Helix is aware of the global state of the system, it can send the message
to appropriate nodes. Once the nodes respond Helix provides the bootstrapping
replica with all the responses.</p>
+ <p>This is a very generic api and can also be used to schedule various
periodic tasks in the cluster like data backups etc. System Admins can also
perform adhoc tasks like on demand backup or execute a system command(like rm
-rf ;-)) across all nodes.</p>
+ <div class="source">
+ <pre> ClusterMessagingService messagingService =
manager.getMessagingService();
+ //CONSTRUCT THE MESSAGE
+ Message requestBackupUriRequest = new Message(
+ MessageType.USER_DEFINE_MSG, UUID.randomUUID().toString());
+ requestBackupUriRequest
+ .setMsgSubType(BootstrapProcess.REQUEST_BOOTSTRAP_URL);
+ requestBackupUriRequest.setMsgState(MessageState.NEW);
+ //SET THE RECIPIENT CRITERIA, All nodes that satisfy the criteria will
receive the message
+ Criteria recipientCriteria = new Criteria();
+ recipientCriteria.setInstanceName("%");
+ recipientCriteria.setRecipientInstanceType(InstanceType.PARTICIPANT);
+ recipientCriteria.setResource("MyDB");
+ recipientCriteria.setPartition("");
+ //Should be processed only the process that is active at the time of
sending the message.
+ //This means if the recipient is restarted after message is sent, it
will not be processed.
+ recipientCriteria.setSessionSpecific(true);
+ // wait for 30 seconds
+ int timeout = 30000;
+ //The handler that will be invoked when any recipient responds to the
message.
+ BootstrapReplyHandler responseHandler = new BootstrapReplyHandler();
+ //This will return only after all recipients respond or after timeout.
+ int sentMessageCount = messagingService.sendAndWait(recipientCriteria,
+ requestBackupUriRequest, responseHandler, timeout);
+</pre>
+ </div>
+ <p>See HelixManager.getMessagingService for more info.</p>
+ </div>
+ <div class="section">
+ <h3 id="Application_specific_property_storage">Application specific property
storage</h3>
+ <p>There are several usecases where applications needs support for
distributed data structures. Helix uses Zookeeper to store the application data
and hence provides notifications when the data changes. One value add Helix
provides is the ability to specify cache the data and also write through cache.
This is more efficient than reading from ZK every time.</p>
+ <p>See HelixManager.getHelixPropertyStore</p>
+ </div>
+ <div class="section">
+ <h3 id="Throttling">Throttling</h3>
+ <p>Since all state changes in the system are triggered through transitions,
Helix can control the number of transitions that can happen in parallel. Some
of the transitions may be light weight but some might involve moving data
around which is quite expensive. Helix allows applications to set threshold on
transitions. The threshold can be set at the multiple scopes.</p>
+ <ul>
+ <li>MessageType e.g STATE_TRANSITION</li>
+ <li>TransitionType e.g SLAVE-MASTER</li>
+ <li>Resource e.g database</li>
+ <li>Node i.e per node max transitions in parallel.</li>
+ </ul>
+ <p>See HelixManager.getHelixAdmin.addMessageConstraint() </p>
+ </div>
+ <div class="section">
+ <h3 id="Health_monitoring_and_alerting">Health monitoring and alerting</h3>
+ <p>This in currently in development mode, not yet productionized.</p>
+ <p>Helix provides ability for each node in the system to report health
metrics on a periodic basis. Helix supports multiple ways to aggregate these
metrics like simple SUM, AVG, EXPONENTIAL DECAY, WINDOW. Helix will only
persist the aggregated value. Applications can define threshold on the
aggregate values according to the SLAâs and when the SLA is violated Helix
will fire an alert. Currently Helix only fires an alert but eventually we plan
to use this metrics to either mark the node dead or load balance the
partitions. This feature will be valuable in for distributed systems that
support multi-tenancy and have huge variation in work load patterns. Another
place this can be used is to detect skewed partitions and rebalance the
cluster.</p>
+ <p>This feature is not yet stable and do not recommend to be used in
production.</p>
+ </div>
+ <div class="section">
+ <h3 id="Controller_deployment_modes">Controller deployment modes</h3>
+ <p>Read Architecture wiki for more details on the Role of a controller. In
simple words, it basically controls the participants in the cluster by issuing
transitions.</p>
+ <p>Helix provides multiple options to deploy the controller.</p>
+ <div class="section">
+ <h4 id="STANDALONE">STANDALONE</h4>
+ <p>Controller can be started as a separate process to manage a cluster.
This is the recommended approach. How ever since one controller can be a single
point of failure, multiple controller processes are required for reliability.
Even if multiple controllers are running only one will be actively managing the
cluster at any time and is decided by a leader election process. If the leader
fails, another leader will resume managing the cluster.</p>
+ <p>Even though we recommend this method of deployment, it has the drawback
of having to manage an additional service for each cluster. See Controller As a
Service option.</p>
+ </div>
+ <div class="section">
+ <h4 id="EMBEDDED">EMBEDDED</h4>
+ <p>If setting up a separate controller process is not viable, then it is
possible to embed the controller as a library in each of the participant. </p>
+ </div>
+ <div class="section">
+ <h4 id="CONTROLLER_AS_A_SERVICE">CONTROLLER AS A SERVICE</h4>
+ <p>One of the cool feature we added in helix was use a set of controllers
to manage a large number of clusters. For example if you have X clusters to be
managed, instead of deploying X*3(3 controllers for fault tolerance)
controllers for each cluster, one can deploy only 3 controllers. Each
controller can manage X/3 clusters. If any controller fails the remaining two
will manage X/2 clusters. At LinkedIn, we always deploy controllers in this
mode. </p>
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Added: helix/site-content/0.9.4-docs/JobExample.json
URL:
http://svn.apache.org/viewvc/helix/site-content/0.9.4-docs/JobExample.json?rev=1877599&view=auto
==============================================================================
--- helix/site-content/0.9.4-docs/JobExample.json (added)
+++ helix/site-content/0.9.4-docs/JobExample.json Mon May 11 18:32:11 2020
@@ -0,0 +1,19 @@
+{
+ "id" : "TestJob",
+ "simpleFields": {
+ "JobID":"Job2",
+ "WorkflowID":"Workflow1"
+ },
+ "mapFields":{
+ "Task1" : {
+ "TASK_ID":"Task1",
+ "TASK_COMMAND":"Backup",
+ "TASK_TARGET_PARTITION":"p1"
+ },
+ "Task2" : {
+ "TASK_ID":"Task2",
+ "TASK_COMMAND":"ReIndex",
+ }
+ },
+ "listFields":{}
+}
