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https://issues.apache.org/jira/browse/HADOOP-18755?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17727674#comment-17727674
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ASF GitHub Bot commented on HADOOP-18755:
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jojochuang commented on PR #5704:
URL: https://github.com/apache/hadoop/pull/5704#issuecomment-1568976020
> I want to implement a new cache replacement algorithm in hdfs but I don't
know which part of module to use and modify. Can any one please help me find
the modules and functions which need to override to add my own caching
replacement algorithm in hdfs
@MayankSinghParmar please use [email protected] mailing list for
these type of questions.
are you looking to build on top of HDFS centralized cache management?
https://hadoop.apache.org/docs/stable/hadoop-project-dist/hadoop-hdfs/CentralizedCacheManagement.html
check out
https://github.com/apache/hadoop/blob/trunk/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/sps/DatanodeCacheManager.java
> openFile builder new optLong() methods break hbase-filesystem
> -------------------------------------------------------------
>
> Key: HADOOP-18755
> URL: https://issues.apache.org/jira/browse/HADOOP-18755
> Project: Hadoop Common
> Issue Type: Bug
> Components: fs
> Affects Versions: 3.3.9
> Reporter: Steve Loughran
> Assignee: Steve Loughran
> Priority: Major
> Labels: pull-request-available
>
> The new methods of HADOOP-18724 break builds of hbase filesystem because
> HBASE-26483 added an implementation of the interface, which,
> because it lacks the complete methods, doesn't compile any more.
> It also marked the (deprecated) methods as final in the base implementation,
> which is also a source of pain.
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