wujinhu commented on code in PR #6904:
URL: https://github.com/apache/hadoop/pull/6904#discussion_r1679006384
##########
hadoop-tools/hadoop-aliyun/src/main/java/org/apache/hadoop/fs/aliyun/oss/Constants.java:
##########
@@ -211,4 +211,54 @@ private Constants() {
public static final String LIST_VERSION = "fs.oss.list.version";
public static final int DEFAULT_LIST_VERSION = 2;
+
+ /**
+ * What is the smallest reasonable seek in bytes such
+ * that we group ranges together during vectored read operation.
+ * Value : {@value}.
+ */
+ public static final String OSS_VECTOR_READS_MIN_SEEK_SIZE =
+ "fs.oss.vectored.read.min.seek.size";
+
+ /**
+ * What is the largest merged read size in bytes such
+ * that we group ranges together during vectored read.
+ * Setting this value to 0 will disable merging of ranges.
+ * Value : {@value}.
+ */
+ public static final String OSS_VECTOR_READS_MAX_MERGED_READ_SIZE =
+ "fs.oss.vectored.read.max.merged.size";
+
+ /**
+ * Default minimum seek in bytes during vectored reads : {@value}.
+ */
+ public static final int DEFAULT_OSS_VECTOR_READS_MIN_SEEK_SIZE = 4896; // 4K
+
+ /**
+ * Default maximum read size in bytes during vectored reads : {@value}.
+ */
+ public static final int DEFAULT_OSS_VECTOR_READS_MAX_MERGED_READ_SIZE =
1253376; //1M
Review Comment:
OK
--
This is an automated message from the Apache Git Service.
To respond to the message, please log on to GitHub and use the
URL above to go to the specific comment.
To unsubscribe, e-mail: [email protected]
For queries about this service, please contact Infrastructure at:
[email protected]
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
