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https://issues.apache.org/jira/browse/HADOOP-19946?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18141900#comment-18141900
 ] 

ASF GitHub Bot commented on HADOOP-19946:
-----------------------------------------

anmolanmol1234 commented on code in PR #8830:
URL: https://github.com/apache/hadoop/pull/8830#discussion_r4523762666


##########
hadoop-tools/hadoop-azure/src/main/java/org/apache/hadoop/fs/azurebfs/AbfsConfiguration.java:
##########
@@ -654,6 +659,18 @@ public class AbfsConfiguration{
           DefaultValue = DEFAULT_AZURE_READ_POLICY)
   private String abfsReadPolicy;
 
+  @LongConfigurationValidatorAnnotation(ConfigurationKey = 
FS_AZURE_BLOB_LAYOUT_CACHE_EVICTION_MINS,
+      DefaultValue = DEFAULT_FS_AZURE_BLOB_LAYOUT_CACHE_EVICTION_MINS)

Review Comment:
   Do we need min value for all configs ?





> ABFS: Enable data locality aware reads for Azure Blob Storage
> -------------------------------------------------------------
>
>                 Key: HADOOP-19946
>                 URL: https://issues.apache.org/jira/browse/HADOOP-19946
>             Project: Hadoop Common
>          Issue Type: New Feature
>          Components: fs/azure
>            Reporter: Manish Bhatt
>            Assignee: Manish Bhatt
>            Priority: Major
>              Labels: pull-request-available
>
> Introduce data locality support in ABFS to improve read performance for Azure 
> Blob Storage by routing read requests to the endpoint that hosts the required 
> data range. The goal is to reduce latency, improve throughput, and make read 
> operations more efficient for large files and distributed workloads. This 
> work adds blob layout discovery, range-to-endpoint mapping, locality-aware 
> range selection, and caching of layout metadata to avoid repeated lookups. It 
> also enables segmented read-ahead aligned with locality boundaries and adds 
> safeguards for concurrency, eviction, timeout handling, and failure 
> propagation needed for reliable production-scale reads.



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