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https://issues.apache.org/jira/browse/HDFS-14356?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16855353#comment-16855353
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Feilong He commented on HDFS-14356:
-----------------------------------
Thanks [~Sammi] so much for your comments.
Upon official doc, #pmem_map_file can return pmem address for existed file on
pmem. I will verify this and consider the proposal in my above nearest comment.
{quote}1. isNativePmemCacheLoader -> isNativeLoader, more generic
{quote}
I will change this method's name.
{quote}2. can we just use
"LOG.info("Initializing cache loader:" + this.getClass().getName());
in PmemMappableBlockLoader, so that log statement in
NativePmemMappableBlockLoader can be removed?
{quote}
Good. I didn't fully get your point before. Thanks for detailed clarification.
I will update the patch accordingly.
> Implement HDFS cache on SCM with native PMDK libs
> -------------------------------------------------
>
> Key: HDFS-14356
> URL: https://issues.apache.org/jira/browse/HDFS-14356
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: caching, datanode
> Reporter: Feilong He
> Assignee: Feilong He
> Priority: Major
> Attachments: HDFS-14356.000.patch, HDFS-14356.001.patch,
> HDFS-14356.002.patch, HDFS-14356.003.patch, HDFS-14356.004.patch,
> HDFS-14356.005.patch, HDFS-14356.006.patch, HDFS-14356.007.patch
>
>
> In this implementation, native PMDK libs are used to map HDFS blocks to SCM.
> To use this implementation, user should build hadoop with PMDK libs by
> specifying a build option. This implementation is only supported on linux
> platform.
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