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HDFS-5215. dfs.datanode.du.reserved is not considered while computing 

available space ( Brahma Reddy Battula via Yongjun Zhang)

(cherry picked from commit 66763bb06f)
This commit is contained in:
Yongjun Zhang 2015-04-07 19:31:58 -07:00
parent 8d3657a577
commit b76c321e94
3 changed files with 18 additions and 7 deletions
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3
hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
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@ -106,6 +106,9 @@ Release 2.8.0 - UNRELEASED
HDFS-7916. 'reportBadBlocks' from datanodes to standby Node BPServiceActor
goes for infinite loop (vinayakumarb)
HDFS-5215. dfs.datanode.du.reserved is not considered while computing
available space ( Brahma Reddy Battula via Yongjun Zhang)
Release 2.7.0 - UNRELEASED
INCOMPATIBLE CHANGES

6
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/fsdataset/impl/FsDatasetImpl.java
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@ -2494,9 +2494,9 @@ class FsDatasetImpl implements FsDatasetSpi<FsVolumeImpl> {
*/
private static class VolumeInfo {
final String directory;
final long usedSpace;
final long freeSpace;
final long reservedSpace;
final long usedSpace; // size of space used by HDFS
final long freeSpace; // size of free space excluding reserved space
final long reservedSpace; // size of space reserved for non-HDFS and RBW
VolumeInfo(FsVolumeImpl v, long usedSpace, long freeSpace) {
this.directory = v.toString();

16
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/fsdataset/impl/FsVolumeImpl.java
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@ -305,9 +305,11 @@ public class FsVolumeImpl implements FsVolumeSpi {
}
/**
* Calculate the capacity of the filesystem, after removing any
* reserved capacity.
* @return the unreserved number of bytes left in this filesystem. May be zero.
* Return either the configured capacity of the file system if configured; or
* the capacity of the file system excluding space reserved for non-HDFS.
*
* @return the unreserved number of bytes left in this filesystem. May be
* zero.
*/
@VisibleForTesting
public long getCapacity() {
@ -329,10 +331,16 @@ public class FsVolumeImpl implements FsVolumeSpi {
this.configuredCapacity = capacity;
}
/*
* Calculate the available space of the filesystem, excluding space reserved
* for non-HDFS and space reserved for RBW
*
* @return the available number of bytes left in this filesystem. May be zero.
*/
@Override
public long getAvailable() throws IOException {
long remaining = getCapacity() - getDfsUsed() - reservedForRbw.get();
long available = usage.getAvailable();
long available = usage.getAvailable() - reserved - reservedForRbw.get();
if (remaining > available) {
remaining = available;
}