Xiao Liu created HBASE-30261:
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Summary: Hide segmented CodeHeap memory pools on process info JSP
pages for JDK 9+
Key: HBASE-30261
URL: https://issues.apache.org/jira/browse/HBASE-30261
Project: HBase
Issue Type: Improvement
Components: UI
Reporter: Xiao Liu
Assignee: Xiao Liu
Fix For: 2.7.0, 3.0.0-beta-2, 2.5.16, 2.6.7
Attachments: p1.png, p2.png, p3.png
On the process info pages ({{processMaster.jsp}} and {{processRS.jsp}}), the
memory pool loop skips code cache pools via:
{code:java}
if (mp.getName().contains("Cache")) continue;
{code}
This only matches the JDK 8 pool name "Code Cache". Since JDK 9 (JEP 197:
Segmented Code Cache), the code cache is split into three pools named
{{CodeHeap 'non-nmethods'}}, {{CodeHeap 'profiled nmethods'}} and
{{CodeHeap 'non-profiled nmethods'}}. None of them contain "Cache", so on
JDK 9+ (including 11/17/21) these three pools are no longer skipped and show
up on the page, which was not intended.
*Fix:* also skip pools whose name contains "CodeHeap", keeping the existing
"Cache" check for JDK 8 compatibility. Applied to both {{processMaster.jsp}}
and {{processRS.jsp}}.
The unrelated "Commited" -> "Committed" header typo on the same tables is
fixed together.
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