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https://issues.apache.org/jira/browse/HDFS-16726?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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yuyanlei updated HDFS-16726:
----------------------------
Description:
* Namenode of HDFS Xmx is set to 280 GB. Use PMAP to check the memory
status，found in addition to heap memory, there is also a [heap] that is taking
up a lot of memory. [heap] seems to be related to MALloc. Is this normal?
* (Attached is PMAP screenshot)
was:
* The Namenode of HDFS is currently set to 280G memory. By checking the memory
status through PMAP, it is found that [heap] occupies a lot of memory, which
seems to be related to malloc ，Have you encountered any similar problems.
* This is a screenshot:
> There is a memory-related problem about HDFS namenode
> -----------------------------------------------------
>
> Key: HDFS-16726
> URL: https://issues.apache.org/jira/browse/HDFS-16726
> Project: Hadoop HDFS
> Issue Type: Task
> Components: hdfs, namenode
> Affects Versions: 2.7.2
> Reporter: yuyanlei
> Priority: Blocker
> Attachments: 图片_lanxin_20220809153722.png
>
>
> * Namenode of HDFS Xmx is set to 280 GB. Use PMAP to check the memory
> status，found in addition to heap memory, there is also a [heap] that is
> taking up a lot of memory. [heap] seems to be related to MALloc. Is this
> normal?
> * (Attached is PMAP screenshot)
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