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HDFS-6369. Document that BlockReader#available() can return more bytes than are remaining in the block (Ted Yu via Colin Patrick McCabe) 

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1600802 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Colin McCabe 2014-06-06 00:59:44 +00:00
parent 3438bf531d
commit 10bfa1ef2b
2 changed files with 4 additions and 0 deletions
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3
hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
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@ -150,6 +150,9 @@ Release 2.5.0 - UNRELEASED
HDFS-6268. Better sorting in NetworkTopology#pseudoSortByDistance when HDFS-6268. Better sorting in NetworkTopology#pseudoSortByDistance when
no local node is found. (wang) no local node is found. (wang)
HDFS-6369. Document that BlockReader#available() can return more bytes than
are remaining in the block (Ted Yu via Colin Patrick McCabe)
OPTIMIZATIONS OPTIMIZATIONS
HDFS-6214. Webhdfs has poor throughput for files >2GB (daryn) HDFS-6214. Webhdfs has poor throughput for files >2GB (daryn)

1
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/BlockReader.java
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@ -51,6 +51,7 @@ public interface BlockReader extends ByteBufferReadable {
* Returns an estimate of the number of bytes that can be read * Returns an estimate of the number of bytes that can be read
* (or skipped over) from this input stream without performing * (or skipped over) from this input stream without performing
* network I/O. * network I/O.
* This may return more than what is actually present in the block.
*/ */
int available() throws IOException; int available() throws IOException;