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HBASE-25906 UI of master-status to show recent history of balancer de… #3303

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Merged
virajjasani merged 1 commit into from
May 25, 2021
Merged

HBASE-25906 UI of master-status to show recent history of balancer de… #3303

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43 changes: 42 additions & 1 deletion hbase-server/src/main/resources/hbase-webapps/master/namedQueueLog.jsp
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Original file line number Diff line number Diff line change
Expand Up @@ -31,16 +31,18 @@
import="org.apache.hadoop.hbase.client.ServerType"
import="org.apache.hadoop.hbase.client.LogEntry"
import="org.apache.hadoop.hbase.client.BalancerRejection"
import="org.apache.hadoop.hbase.client.BalancerDecision"
%>
<%
HMaster master = (HMaster)getServletContext().getAttribute(HMaster.MASTER);
Configuration conf = master.getConfiguration();

List<BalancerRejection> logList = null;

List<BalancerDecision> decisionList = null;
if(master.isInitialized()) {
try (Admin admin = master.getConnection().getAdmin()) {
logList = (List<BalancerRejection>)(List<?>)admin.getLogEntries(null, "BALANCER_REJECTION", ServerType.MASTER, 250, null);
decisionList = (List<BalancerDecision>)(List<?>)admin.getLogEntries(null, "BALANCER_DECISION", ServerType.MASTER, 250, null);
}
}
%>
Expand All @@ -61,6 +63,9 @@
<li class="active">
<a href="#tab_named_queue1" data-toggle="tab"> Balancer Rejection </a>
</li>
<li class="">
<a href="#tab_named_queue2" data-toggle="tab"> Balancer Decision </a>
</li>
</ul>
<div class="tab-content" style="padding-bottom: 9px; border-bottom: 1px solid #ddd;">
<div class="tab-pane active" id="tab_named_queue1">
Expand Down Expand Up @@ -89,6 +94,42 @@
<% } %>
</table>
</div>
<div class="tab-pane" id="tab_named_queue2">
<table class="table table-striped">
<tr>
<th>Initial Function Costs</th>
<th>Final Function Costs</th>
<th>Init Total Cost</th>
<th>Computed Total Cost</th>
<th>Computed Steps</th>
<th>Region Plans</th>
</tr>
<% if (decisionList == null) { %>
<% } else { %>
<% for (BalancerDecision decision: decisionList) { %>
<tr>
<td><%=decision.getInitialFunctionCosts()%></td>
<td><%=decision.getFinalFunctionCosts()%></td>
<td><%=StringUtils.format("%.2f", decision.getInitTotalCost())%></td>
<td><%=StringUtils.format("%.2f", decision.getComputedTotalCost())%></td>
<td><%=decision.getComputedSteps()%></td>
<%
List<String> regionPlans = decision.getRegionPlans();
if ( regionPlans == null) {%>
<td></td>
<% } else { %>
<td>
<table>
<% for (String plan : regionPlans) { %>
<tr><td><%=plan%></td></tr>
<% } %>
</table>
</td>
<% } %>
</tr>
<% } %>
<% } %>
</div>
</div>
</div>
</div>
Expand Down