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HADOOP-16705. MBeanInfoBuilder puts unnecessary memory pressure on the system with a debug log.

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MBeanInfoBuilder's get() method DEBUG logs all the MBeanAttributeInfo attributes that it gathered. This can have a high memory churn that can be easily avoided.
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Lukas Majercak 2019-11-14 09:54:02 -08:00 committed by Inigo Goiri
parent a139a87610
commit c73334a924
1 changed files with 1 additions and 1 deletions
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hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/metrics2/impl/MBeanInfoBuilder.java
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@ -106,7 +106,7 @@ MBeanInfo get() {
} }
++curRecNo; ++curRecNo;
} }
MetricsSystemImpl.LOG.debug(attrs.toString()); MetricsSystemImpl.LOG.debug("{}", attrs);
MBeanAttributeInfo[] attrsArray = new MBeanAttributeInfo[attrs.size()]; MBeanAttributeInfo[] attrsArray = new MBeanAttributeInfo[attrs.size()];
return new MBeanInfo(name, description, attrs.toArray(attrsArray), return new MBeanInfo(name, description, attrs.toArray(attrsArray),
null, null, null); // no ops/ctors/notifications null, null, null); // no ops/ctors/notifications