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https://issues.apache.org/jira/browse/HADOOP-19767?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18050099#comment-18050099
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ASF GitHub Bot commented on HADOOP-19767:
-----------------------------------------
anmolanmol1234 commented on code in PR #8153:
URL: https://github.com/apache/hadoop/pull/8153#discussion_r2664688584
##########
hadoop-tools/hadoop-azure/src/test/java/org/apache/hadoop/fs/azurebfs/services/TestAbfsInputStream.java:
##########
@@ -57,17 +58,16 @@
import org.apache.hadoop.fs.azurebfs.utils.TracingHeaderVersion;
import org.apache.hadoop.fs.impl.OpenFileParameters;
+import static org.apache.hadoop.fs.Options.OpenFileOptions.*;
+import static
org.apache.hadoop.fs.Options.OpenFileOptions.FS_OPTION_OPENFILE_READ_POLICY_AVRO;
+import static
org.apache.hadoop.fs.Options.OpenFileOptions.FS_OPTION_OPENFILE_READ_POLICY_SEQUENTIAL;
import static org.apache.hadoop.fs.azurebfs.constants.AbfsHttpConstants.COLON;
import static
org.apache.hadoop.fs.azurebfs.constants.AbfsHttpConstants.EMPTY_STRING;
import static
org.apache.hadoop.fs.azurebfs.constants.AbfsHttpConstants.SPLIT_NO_LIMIT;
import static
org.apache.hadoop.fs.azurebfs.constants.ConfigurationKeys.FS_AZURE_ENABLE_PREFETCH_REQUEST_PRIORITY;
+import static
org.apache.hadoop.fs.azurebfs.constants.FileSystemConfigurations.ONE_MB;
import static
org.apache.hadoop.fs.azurebfs.constants.HttpHeaderConfigurations.X_MS_REQUEST_PRIORITY;
-import static org.apache.hadoop.fs.azurebfs.constants.ReadType.DIRECT_READ;
-import static org.apache.hadoop.fs.azurebfs.constants.ReadType.FOOTER_READ;
-import static
org.apache.hadoop.fs.azurebfs.constants.ReadType.MISSEDCACHE_READ;
-import static org.apache.hadoop.fs.azurebfs.constants.ReadType.NORMAL_READ;
-import static org.apache.hadoop.fs.azurebfs.constants.ReadType.PREFETCH_READ;
-import static org.apache.hadoop.fs.azurebfs.constants.ReadType.SMALLFILE_READ;
+import static org.apache.hadoop.fs.azurebfs.constants.ReadType.*;
Review Comment:
* import should be reverted
> ABFS: [Read] Introduce Abfs Input Policy for detecting read patterns
> --------------------------------------------------------------------
>
> Key: HADOOP-19767
> URL: https://issues.apache.org/jira/browse/HADOOP-19767
> Project: Hadoop Common
> Issue Type: Sub-task
> Components: fs/azure
> Affects Versions: 3.4.2
> Reporter: Anuj Modi
> Assignee: Anuj Modi
> Priority: Major
> Labels: pull-request-available
>
> Since the onset of ABFS Driver, there has been a single implementation of
> AbfsInputStream. Different kinds of workloads require different heuristics to
> give the best performance for that type of workload. For example:
> # Sequential Read Workloads like DFSIO and DistCP gain performance
> improvement from prefetched
> # Random Read Workloads on other hand do not need Prefetches and enabling
> prefetches for them is an overhead and TPS heavy
> # Query Workloads involving Parquet/ORC files benefit from improvements like
> Footer Read and Small Files Reads
> To accomodate this we need to determine the pattern and accordingly create
> Input Streams implemented for that particular pattern.
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