[HDFS-8520] Patch for PPC64 block size

• Type: Bug
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: 2.7.1
• Labels: ppc64

Environment

RHEL 7.1 /PPC64

• Target Version/s: 2.7.8
• Flags: Patch
• Assignee: Tony Reix
• Reporter: Tony Reix
• Created: 02/Jun/15 14:46
• Updated: 02/Jun/18 17:45

Description

The attached patch enables Hadoop to work on PPC64.
That deals with SystemPageSize and BloclSize , which are not 4096 on PPC64.

There are changes in 3 files:

• hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/io/nativeio/NativeIO.java
• hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/datanode/TestFsDatasetCache.java
• hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/TestCacheDirectives.java

where 4096 is replaced by getOperatingSystemPageSize() or by using PAGE_SIZE

The patch has been built on branch-2.7 .

Issue Links

• is related to: HDFS-6515 testPageRounder (org.apache.hadoop.hdfs.server.datanode.TestFsDatasetCache)
• is related to: HDFS-6608 FsDatasetCache: hard-coded 4096 value in test is not appropriate for all HW
• is related to: HDFS-11110 Hardcoded BLOCK SIZE value of 4096 is not appropriate for PowerPC