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HADOOP-11570. S3AInputStream.close() downloads the remaining bytes of the object from S3. (Dan Hecht via stevel).

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This commit is contained in:
Steve Loughran 2015-02-17 16:36:32 +00:00
parent f0412de1c1
commit 826267f789
2 changed files with 15 additions and 8 deletions
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3
hadoop-common-project/hadoop-common/CHANGES.txt
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@ -939,6 +939,9 @@ Release 2.7.0 - UNRELEASED
HADOOP-11000. HAServiceProtocol's health state is incorrectly transitioned
to SERVICE_NOT_RESPONDING (Ming Ma via vinayakumarb)
HADOOP-11570. S3AInputStream.close() downloads the remaining bytes of
the object from S3. (Dan Hecht via stevel).
Release 2.6.1 - UNRELEASED
INCOMPATIBLE CHANGES

20
hadoop-tools/hadoop-aws/src/main/java/org/apache/hadoop/fs/s3a/S3AInputStream.java
View File

@ -37,14 +37,13 @@ public class S3AInputStream extends FSInputStream {
private long pos;
private boolean closed;
private S3ObjectInputStream wrappedStream;
private S3Object wrappedObject;
private FileSystem.Statistics stats;
private AmazonS3Client client;
private String bucket;
private String key;
private long contentLength;
public static final Logger LOG = S3AFileSystem.LOG;
public static final long CLOSE_THRESHOLD = 4096;
public S3AInputStream(String bucket, String key, long contentLength, AmazonS3Client client,
FileSystem.Statistics stats) {
@ -55,12 +54,11 @@ public S3AInputStream(String bucket, String key, long contentLength, AmazonS3Cli
this.stats = stats;
this.pos = 0;
this.closed = false;
this.wrappedObject = null;
this.wrappedStream = null;
}
private void openIfNeeded() throws IOException {
if (wrappedObject == null) {
if (wrappedStream == null) {
reopen(0);
}
}
@ -90,8 +88,7 @@ private synchronized void reopen(long pos) throws IOException {
GetObjectRequest request = new GetObjectRequest(bucket, key);
request.setRange(pos, contentLength-1);
wrappedObject = client.getObject(request);
wrappedStream = wrappedObject.getObjectContent();
wrappedStream = client.getObject(request).getObjectContent();
if (wrappedStream == null) {
throw new IOException("Null IO stream");
@ -192,8 +189,15 @@ private void checkNotClosed() throws IOException {
public synchronized void close() throws IOException {
super.close();
closed = true;
if (wrappedObject != null) {
wrappedObject.close();
if (wrappedStream != null) {
if (contentLength - pos <= CLOSE_THRESHOLD) {
// Close, rather than abort, so that the http connection can be reused.
wrappedStream.close();
} else {
// Abort, rather than just close, the underlying stream. Otherwise, the
// remaining object payload is read from S3 while closing the stream.
wrappedStream.abort();
}
}
}