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HDFS-8696. Make the lower and higher watermark in the DN Netty server configurable. Contributed by Xiaobing Zhou.

This commit is contained in:
Haohui Mai 2015-09-29 14:59:13 -07:00
parent 8703301b46
commit 6f335e4f0e
3 changed files with 24 additions and 0 deletions
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3
hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
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@ -997,6 +997,9 @@ Release 2.8.0 - UNRELEASED
HDFS-9165. Move entries in META-INF/services/o.a.h.fs.FileSystem to
hdfs-client. (Mingliang Liu via wheat9)
HDFS-8696. Make the lower and higher watermark in the DN Netty server
configurable. (Xiaobing Zhou via wheat9)
OPTIMIZATIONS
HDFS-8026. Trace FSOutputSummer#writeChecksumChunks rather than

6
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/DFSConfigKeys.java
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@ -63,6 +63,12 @@ public class DFSConfigKeys extends CommonConfigurationKeys {
HdfsClientConfigKeys.DFS_HDFS_BLOCKS_METADATA_ENABLED_DEFAULT;
public static final String DFS_WEBHDFS_ACL_PERMISSION_PATTERN_DEFAULT =
HdfsClientConfigKeys.DFS_WEBHDFS_ACL_PERMISSION_PATTERN_DEFAULT;
public static final String DFS_WEBHDFS_NETTY_LOW_WATERMARK =
"dfs.webhdfs.netty.low.watermark";
public static final int DFS_WEBHDFS_NETTY_LOW_WATERMARK_DEFAULT = 32768;
public static final String DFS_WEBHDFS_NETTY_HIGH_WATERMARK =
"dfs.webhdfs.netty.high.watermark";
public static final int DFS_WEBHDFS_NETTY_HIGH_WATERMARK_DEFAULT = 65535;
// HA related configuration
public static final String DFS_DATANODE_RESTART_REPLICA_EXPIRY_KEY = "dfs.datanode.restart.replica.expiration";

15
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/web/DatanodeHttpServer.java
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@ -21,6 +21,7 @@ import io.netty.bootstrap.ServerBootstrap;
import io.netty.channel.ChannelFactory;
import io.netty.channel.ChannelFuture;
import io.netty.channel.ChannelInitializer;
import io.netty.channel.ChannelOption;
import io.netty.channel.ChannelPipeline;
import io.netty.channel.EventLoopGroup;
import io.netty.channel.nio.NioEventLoopGroup;
@ -30,10 +31,12 @@ import io.netty.handler.codec.http.HttpRequestDecoder;
import io.netty.handler.codec.http.HttpResponseEncoder;
import io.netty.handler.ssl.SslHandler;
import io.netty.handler.stream.ChunkedWriteHandler;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.permission.FsPermission;
import org.apache.hadoop.hdfs.DFSConfigKeys;
import org.apache.hadoop.hdfs.DFSUtil;
import org.apache.hadoop.hdfs.server.common.JspHelper;
import org.apache.hadoop.hdfs.server.datanode.BlockScanner;
@ -117,6 +120,18 @@ public class DatanodeHttpServer implements Closeable {
conf, confForCreate));
}
});
this.httpServer.childOption(
ChannelOption.WRITE_BUFFER_HIGH_WATER_MARK,
conf.getInt(
DFSConfigKeys.DFS_WEBHDFS_NETTY_HIGH_WATERMARK,
DFSConfigKeys.DFS_WEBHDFS_NETTY_HIGH_WATERMARK_DEFAULT));
this.httpServer.childOption(
ChannelOption.WRITE_BUFFER_LOW_WATER_MARK,
conf.getInt(
DFSConfigKeys.DFS_WEBHDFS_NETTY_LOW_WATERMARK,
DFSConfigKeys.DFS_WEBHDFS_NETTY_LOW_WATERMARK_DEFAULT));
if (externalHttpChannel == null) {
httpServer.channel(NioServerSocketChannel.class);
} else {