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https://issues.apache.org/jira/browse/TAJO-2122?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15251546#comment-15251546
]
ASF GitHub Bot commented on TAJO-2122:
--------------------------------------
Github user jihoonson commented on a diff in the pull request:
https://github.com/apache/tajo/pull/1001#discussion_r60542212
--- Diff: tajo-core/src/main/java/org/apache/tajo/worker/LocalFetcher.java
---
@@ -0,0 +1,451 @@
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+ package org.apache.tajo.worker;
+
+import com.google.common.annotations.VisibleForTesting;
+import com.google.gson.Gson;
+import io.netty.bootstrap.Bootstrap;
+import io.netty.buffer.ByteBuf;
+import io.netty.channel.*;
+import io.netty.channel.socket.nio.NioSocketChannel;
+import io.netty.handler.codec.http.*;
+import io.netty.handler.timeout.ReadTimeoutException;
+import io.netty.handler.timeout.ReadTimeoutHandler;
+import io.netty.util.ReferenceCountUtil;
+import org.apache.commons.logging.Log;
+import org.apache.commons.logging.LogFactory;
+import org.apache.hadoop.fs.FileSystem;
+import org.apache.hadoop.fs.LocalDirAllocator;
+import org.apache.hadoop.fs.LocalFileSystem;
+import org.apache.hadoop.fs.Path;
+import org.apache.tajo.TajoProtos;
+import org.apache.tajo.TajoProtos.FetcherState;
+import org.apache.tajo.conf.TajoConf;
+import org.apache.tajo.conf.TajoConf.ConfVars;
+import org.apache.tajo.exception.TajoInternalError;
+import org.apache.tajo.pullserver.PullServerConstants;
+import org.apache.tajo.pullserver.PullServerConstants.Param;
+import org.apache.tajo.pullserver.PullServerUtil;
+import org.apache.tajo.pullserver.PullServerUtil.PullServerParams;
+import
org.apache.tajo.pullserver.PullServerUtil.PullServerRequestURIBuilder;
+import org.apache.tajo.pullserver.TajoPullServerService;
+import org.apache.tajo.pullserver.retriever.FileChunk;
+import org.apache.tajo.pullserver.retriever.FileChunkMeta;
+import org.apache.tajo.rpc.NettyUtils;
+import org.apache.tajo.storage.HashShuffleAppenderManager;
+import org.apache.tajo.storage.StorageUtil;
+
+import java.io.File;
+import java.io.IOException;
+import java.net.InetSocketAddress;
+import java.net.URI;
+import java.nio.charset.Charset;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Optional;
+import java.util.concurrent.ExecutionException;
+import java.util.concurrent.TimeUnit;
+
+public class LocalFetcher extends AbstractFetcher {
+
+ private final static Log LOG = LogFactory.getLog(LocalFetcher.class);
+
+// private final ExecutionBlockContext executionBlockContext;
+ private final TajoPullServerService pullServerService;
+
+ private final String host;
+ private int port;
+ private final Bootstrap bootstrap;
+ private final int maxUrlLength;
+ private final List<FileChunkMeta> chunkMetas = new ArrayList<>();
+ private final String tableName;
+ private final FileSystem localFileSystem;
+ private final LocalDirAllocator localDirAllocator;
+
+ @VisibleForTesting
+ public LocalFetcher(TajoConf conf, URI uri, String tableName) throws
IOException {
+ super(conf, uri);
+ this.maxUrlLength =
conf.getIntVar(ConfVars.PULLSERVER_FETCH_URL_MAX_LENGTH);
+ this.tableName = tableName;
+ this.localFileSystem = new LocalFileSystem();
+ this.localDirAllocator = new
LocalDirAllocator(ConfVars.WORKER_TEMPORAL_DIR.varname);
+ this.pullServerService = null;
+
+ String scheme = uri.getScheme() == null ? "http" : uri.getScheme();
+ this.host = uri.getHost() == null ? "localhost" : uri.getHost();
+ this.port = uri.getPort();
+ if (port == -1) {
+ if (scheme.equalsIgnoreCase("http")) {
+ this.port = 80;
+ } else if (scheme.equalsIgnoreCase("https")) {
+ this.port = 443;
+ }
+ }
+
+ bootstrap = new Bootstrap()
+ .group(
+ NettyUtils.getSharedEventLoopGroup(NettyUtils.GROUP.FETCHER,
+
conf.getIntVar(ConfVars.SHUFFLE_RPC_CLIENT_WORKER_THREAD_NUM)))
+ .channel(NioSocketChannel.class)
+ .option(ChannelOption.ALLOCATOR, NettyUtils.ALLOCATOR)
+ .option(ChannelOption.CONNECT_TIMEOUT_MILLIS,
+ conf.getIntVar(ConfVars.SHUFFLE_FETCHER_CONNECT_TIMEOUT) *
1000)
+ .option(ChannelOption.SO_RCVBUF, 1048576) // set 1M
+ .option(ChannelOption.TCP_NODELAY, true);
+ }
+
+ public LocalFetcher(TajoConf conf, URI uri, ExecutionBlockContext
executionBlockContext, String tableName) {
+ super(conf, uri);
+ this.localFileSystem = executionBlockContext.getLocalFS();
+ this.localDirAllocator = executionBlockContext.getLocalDirAllocator();
+ this.maxUrlLength =
conf.getIntVar(ConfVars.PULLSERVER_FETCH_URL_MAX_LENGTH);
+ this.tableName = tableName;
+
+ Optional<TajoPullServerService> optional =
executionBlockContext.getSharedResource().getPullServerService();
+ if (optional.isPresent()) {
+ // local pull server service
+ this.pullServerService = optional.get();
+ this.host = null;
+ this.bootstrap = null;
+
+ } else if (PullServerUtil.useExternalPullServerService(conf)) {
+ // external pull server service
+ pullServerService = null;
+
+ String scheme = uri.getScheme() == null ? "http" : uri.getScheme();
+ this.host = uri.getHost() == null ? "localhost" : uri.getHost();
+ this.port = uri.getPort();
+ if (port == -1) {
+ if (scheme.equalsIgnoreCase("http")) {
+ this.port = 80;
+ } else if (scheme.equalsIgnoreCase("https")) {
+ this.port = 443;
+ }
+ }
+
+ bootstrap = new Bootstrap()
+ .group(
+ NettyUtils.getSharedEventLoopGroup(NettyUtils.GROUP.FETCHER,
+
conf.getIntVar(ConfVars.SHUFFLE_RPC_CLIENT_WORKER_THREAD_NUM)))
+ .channel(NioSocketChannel.class)
+ .option(ChannelOption.ALLOCATOR, NettyUtils.ALLOCATOR)
+ .option(ChannelOption.CONNECT_TIMEOUT_MILLIS,
+ conf.getIntVar(ConfVars.SHUFFLE_FETCHER_CONNECT_TIMEOUT) *
1000)
+ .option(ChannelOption.SO_RCVBUF, 1048576) // set 1M
+ .option(ChannelOption.TCP_NODELAY, true);
+ } else {
+ endFetch(FetcherState.FETCH_FAILED);
+ throw new TajoInternalError("Pull server service is not
initialized");
+ }
+ }
+
+ @Override
+ public List<FileChunk> get() throws IOException {
+ return pullServerService != null ? getDirect() : getFromFetchURI();
--- End diff --
There are two cases for local fetcher.
* When an internal pull server is running, local fetchers can retrieve data
directly.
* When an external pull server is running,
* If the shuffle type is hash, local fetchers can still retrieve data
directly.
* If the shuffle type is range, local fetchers need to get meta
information of data via HTTP. Once the meta information is retrieved, they can
read data directly.
I'll add this description.
> PullServer as an Auxiliary service of Yarn
> ------------------------------------------
>
> Key: TAJO-2122
> URL: https://issues.apache.org/jira/browse/TAJO-2122
> Project: Tajo
> Issue Type: New Feature
> Components: Pull Server
> Reporter: Jihoon Son
> Assignee: Jihoon Son
> Fix For: 0.12.0
>
>
> We are going to support Yarn as Tajo's one of resource schedulers. To do so,
> the PullServer should be capable of executing as an Auxiliary service.
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