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https://issues.apache.org/jira/browse/HADOOP-19613?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18010264#comment-18010264
]
ASF GitHub Bot commented on HADOOP-19613:
-----------------------------------------
anujmodi2021 commented on code in PR #7801:
URL: https://github.com/apache/hadoop/pull/7801#discussion_r2234849377
##########
hadoop-tools/hadoop-azure/src/main/java/org/apache/hadoop/fs/azurebfs/AbfsConfiguration.java:
##########
@@ -1368,6 +1403,54 @@ public boolean isReadAheadEnabled() {
return this.enabledReadAhead;
}
+ public int getMinReadAheadV2ThreadPoolSize() {
+ if (minReadAheadV2ThreadPoolSize <= 0) {
+ // If the minReadAheadV2ThreadPoolSize is not set, use the default value
+ return 2 * Runtime.getRuntime().availableProcessors();
+ }
+ return minReadAheadV2ThreadPoolSize;
+ }
+
+ public int getMaxReadAheadV2ThreadPoolSize() {
+ if (maxReadAheadV2ThreadPoolSize <= 0) {
+ // If the maxReadAheadV2ThreadPoolSize is not set, use the default value
+ return 4 * Runtime.getRuntime().availableProcessors();
+ }
+ return maxReadAheadV2ThreadPoolSize;
+ }
+
+ public int getMinReadAheadV2BufferPoolSize() {
+ if (minReadAheadV2BufferPoolSize <= 0) {
+ // If the minReadAheadV2BufferPoolSize is not set, use the default value
+ return 2 * Runtime.getRuntime().availableProcessors();
+ }
+ return minReadAheadV2BufferPoolSize;
+ }
+
+ public int getMaxReadAheadV2BufferPoolSize() {
+ if (maxReadAheadV2BufferPoolSize <= 0) {
+ // If the maxReadAheadV2BufferPoolSize is not set, use the default value
+ return 4 * Runtime.getRuntime().availableProcessors();
+ }
+ return maxReadAheadV2BufferPoolSize;
+ }
+
+ public int getReadAheadExecutorServiceTTLInMilliSeconds() {
+ return readAheadExecutorServiceTTLInMilliSeconds;
+ }
+
+ public int getReadAheadV2CachedBufferTTLMilliseconds() {
Review Comment:
Good suggestion. Taken
##########
hadoop-tools/hadoop-azure/src/main/java/org/apache/hadoop/fs/azurebfs/AbfsConfiguration.java:
##########
@@ -381,6 +381,41 @@ public class AbfsConfiguration{
DefaultValue = DEFAULT_ENABLE_READAHEAD)
private boolean enabledReadAhead;
+ @BooleanConfigurationValidatorAnnotation(
+ ConfigurationKey = FS_AZURE_ENABLE_READAHEAD_V2,
+ DefaultValue = DEFAULT_ENABLE_READAHEAD_V2)
+ private boolean isReadAheadV2Enabled;
+
+ @IntegerConfigurationValidatorAnnotation(ConfigurationKey =
+ FS_AZURE_READAHEAD_V2_MIN_THREAD_POOL_SIZE,
+ DefaultValue = DEFAULT_READAHEAD_V2_MIN_THREAD_POOL_SIZE)
+ private int minReadAheadV2ThreadPoolSize;
+
+ @IntegerConfigurationValidatorAnnotation(ConfigurationKey =
+ FS_AZURE_READAHEAD_V2_MAX_THREAD_POOL_SIZE,
+ DefaultValue = DEFAULT_READAHEAD_V2_MAX_THREAD_POOL_SIZE)
+ private int maxReadAheadV2ThreadPoolSize;
+
+ @IntegerConfigurationValidatorAnnotation(ConfigurationKey =
+ FS_AZURE_READAHEAD_V2_MIN_BUFFER_POOL_SIZE,
+ DefaultValue = DEFAULT_READAHEAD_V2_MIN_BUFFER_POOL_SIZE)
+ private int minReadAheadV2BufferPoolSize;
+
+ @IntegerConfigurationValidatorAnnotation(ConfigurationKey =
+ FS_AZURE_READAHEAD_V2_MAX_BUFFER_POOL_SIZE,
+ DefaultValue = DEFAULT_READAHEAD_V2_MAX_BUFFER_POOL_SIZE)
+ private int maxReadAheadV2BufferPoolSize;
+
+ @IntegerConfigurationValidatorAnnotation(ConfigurationKey =
+ FS_AZURE_READAHEAD_V2_EXECUTOR_SERVICE_TTL_MILLISECONDS,
+ DefaultValue = DEFAULT_READAHEAD_V2_EXECUTOR_SERVICE_TTL_MILLISECONDS)
+ private int readAheadExecutorServiceTTLInMilliSeconds;
+
+ @IntegerConfigurationValidatorAnnotation(ConfigurationKey =
+ FS_AZURE_READAHEAD_V2_CACHED_BUFFER_TTL_MILLISECONDS,
+ DefaultValue = DEFAULT_READAHEAD_V2_CACHED_BUFFER_TTL_MILLISECONDS)
+ private int readAheadV2CachedBufferTTLMilliseconds;
Review Comment:
Great suggestion. Taken
> ABFS: [ReadAheadV2] Refactor ReadBufferManager to isolate new code with the
> current working code
> ------------------------------------------------------------------------------------------------
>
> Key: HADOOP-19613
> URL: https://issues.apache.org/jira/browse/HADOOP-19613
> Project: Hadoop Common
> Issue Type: Sub-task
> Components: fs/azure
> Affects Versions: 3.5.0, 3.4.1
> Reporter: Anuj Modi
> Assignee: Anuj Modi
> Priority: Major
> Labels: pull-request-available
>
> Read Buffer Manager used today was introduced way back and has been stable
> for quite a while.
> Read Buffer Manager to be introduced as part of
> https://issues.apache.org/jira/browse/HADOOP-19596 will introduce many
> changes incrementally over time. While the development goes on and we are
> able to fully stabilise the optimized version we need the current flow to be
> functional and undisturbed.
> This work item is to isolate that from new code by refactoring
> ReadBufferManager class to have 2 different implementations with same public
> interfaces: ReadBufferManagerV1 and ReadBufferManagerV2.
> This will also introduce new configs that can be used to toggle between new
> and old code.
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