HDFS-8270. create() always retried with hardcoded timeout when file already exists with open lease (Contributed by J.Andreina)
(cherry picked from commit 54f83d9bd9
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84cae6c101
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@ -599,6 +599,9 @@ Release 2.7.1 - UNRELEASED
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HDFS-8486. DN startup may cause severe data loss (Daryn Sharp via Colin P.
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McCabe)
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HDFS-8270. create() always retried with hardcoded timeout when file already
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exists with open lease (J.Andreina via vinayakumarb)
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Release 2.7.0 - 2015-04-20
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INCOMPATIBLE CHANGES
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@ -344,13 +344,10 @@ public class DFSClient implements java.io.Closeable, RemotePeerFactory,
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this.namenode = rpcNamenode;
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dtService = null;
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} else {
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boolean noRetries = conf.getBoolean(
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DFSConfigKeys.DFS_CLIENT_TEST_NO_PROXY_RETRIES,
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DFSConfigKeys.DFS_CLIENT_TEST_NO_PROXY_RETRIES_DEFAULT);
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Preconditions.checkArgument(nameNodeUri != null,
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"null URI");
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proxyInfo = NameNodeProxies.createProxy(conf, nameNodeUri,
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ClientProtocol.class, nnFallbackToSimpleAuth, !noRetries);
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ClientProtocol.class, nnFallbackToSimpleAuth);
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this.dtService = proxyInfo.getDelegationTokenService();
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this.namenode = proxyInfo.getProxy();
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}
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@ -20,7 +20,6 @@ package org.apache.hadoop.hdfs;
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import java.util.concurrent.TimeUnit;
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import com.google.common.annotations.VisibleForTesting;
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import org.apache.hadoop.classification.InterfaceAudience;
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import org.apache.hadoop.fs.CommonConfigurationKeys;
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import org.apache.hadoop.hdfs.client.HdfsClientConfigKeys;
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@ -1000,13 +999,6 @@ public class DFSConfigKeys extends CommonConfigurationKeys {
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public static final String DFS_CLIENT_TEST_DROP_NAMENODE_RESPONSE_NUM_KEY = "dfs.client.test.drop.namenode.response.number";
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public static final int DFS_CLIENT_TEST_DROP_NAMENODE_RESPONSE_NUM_DEFAULT = 0;
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// Create a NN proxy without retries for testing.
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@VisibleForTesting
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public static final String DFS_CLIENT_TEST_NO_PROXY_RETRIES =
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"dfs.client.test.no.proxy.retries";
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@VisibleForTesting
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public static final boolean DFS_CLIENT_TEST_NO_PROXY_RETRIES_DEFAULT = false;
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public static final String DFS_CLIENT_SLOW_IO_WARNING_THRESHOLD_KEY =
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"dfs.client.slow.io.warning.threshold.ms";
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public static final long DFS_CLIENT_SLOW_IO_WARNING_THRESHOLD_DEFAULT = 30000;
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@ -34,7 +34,6 @@ import org.apache.hadoop.classification.InterfaceAudience;
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import org.apache.hadoop.conf.Configuration;
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import org.apache.hadoop.hdfs.client.HdfsClientConfigKeys;
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import org.apache.hadoop.hdfs.client.impl.DfsClientConf;
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import org.apache.hadoop.hdfs.protocol.AlreadyBeingCreatedException;
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import org.apache.hadoop.hdfs.protocol.ClientProtocol;
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import org.apache.hadoop.hdfs.protocol.HdfsConstants;
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import org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolPB;
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@ -43,7 +42,6 @@ import org.apache.hadoop.hdfs.protocolPB.JournalProtocolPB;
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import org.apache.hadoop.hdfs.protocolPB.JournalProtocolTranslatorPB;
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import org.apache.hadoop.hdfs.protocolPB.NamenodeProtocolPB;
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import org.apache.hadoop.hdfs.protocolPB.NamenodeProtocolTranslatorPB;
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import org.apache.hadoop.hdfs.server.common.HdfsServerConstants;
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import org.apache.hadoop.hdfs.server.namenode.NameNode;
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import org.apache.hadoop.hdfs.server.namenode.SafeModeException;
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import org.apache.hadoop.hdfs.server.namenode.ha.AbstractNNFailoverProxyProvider;
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@ -161,31 +159,6 @@ public class NameNodeProxies {
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public static <T> ProxyAndInfo<T> createProxy(Configuration conf,
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URI nameNodeUri, Class<T> xface, AtomicBoolean fallbackToSimpleAuth)
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throws IOException {
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return createProxy(conf, nameNodeUri, xface, fallbackToSimpleAuth, true);
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}
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/**
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* Creates the namenode proxy with the passed protocol. This will handle
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* creation of either HA- or non-HA-enabled proxy objects, depending upon
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* if the provided URI is a configured logical URI.
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*
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* @param conf the configuration containing the required IPC
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* properties, client failover configurations, etc.
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* @param nameNodeUri the URI pointing either to a specific NameNode
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* or to a logical nameservice.
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* @param xface the IPC interface which should be created
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* @param fallbackToSimpleAuth set to true or false during calls to
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* indicate if a secure client falls back to simple auth
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* @param withRetries certain interfaces have a non-standard retry policy
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* @return an object containing both the proxy and the associated
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* delegation token service it corresponds to
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* @throws IOException if there is an error creating the proxy
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**/
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@SuppressWarnings("unchecked")
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public static <T> ProxyAndInfo<T> createProxy(Configuration conf,
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URI nameNodeUri, Class<T> xface, AtomicBoolean fallbackToSimpleAuth,
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boolean withRetries)
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throws IOException {
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AbstractNNFailoverProxyProvider<T> failoverProxyProvider =
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createFailoverProxyProvider(conf, nameNodeUri, xface, true,
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fallbackToSimpleAuth);
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@ -193,7 +166,7 @@ public class NameNodeProxies {
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if (failoverProxyProvider == null) {
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// Non-HA case
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return createNonHAProxy(conf, NameNode.getAddress(nameNodeUri), xface,
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UserGroupInformation.getCurrentUser(), withRetries,
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UserGroupInformation.getCurrentUser(), true,
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fallbackToSimpleAuth);
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} else {
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// HA case
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@ -442,22 +415,8 @@ public class NameNodeProxies {
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if (withRetries) { // create the proxy with retries
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RetryPolicy createPolicy = RetryPolicies
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.retryUpToMaximumCountWithFixedSleep(5,
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HdfsServerConstants.LEASE_SOFTLIMIT_PERIOD, TimeUnit.MILLISECONDS);
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Map<Class<? extends Exception>, RetryPolicy> remoteExceptionToPolicyMap
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= new HashMap<Class<? extends Exception>, RetryPolicy>();
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remoteExceptionToPolicyMap.put(AlreadyBeingCreatedException.class,
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createPolicy);
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RetryPolicy methodPolicy = RetryPolicies.retryByRemoteException(
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defaultPolicy, remoteExceptionToPolicyMap);
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Map<String, RetryPolicy> methodNameToPolicyMap
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= new HashMap<String, RetryPolicy>();
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methodNameToPolicyMap.put("create", methodPolicy);
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ClientProtocol translatorProxy =
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new ClientNamenodeProtocolTranslatorPB(proxy);
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return (ClientProtocol) RetryProxy.create(
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@ -65,7 +65,6 @@ import org.apache.hadoop.fs.InvalidPathException;
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import org.apache.hadoop.fs.ParentNotDirectoryException;
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import org.apache.hadoop.fs.Path;
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import org.apache.hadoop.fs.permission.FsPermission;
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import org.apache.hadoop.hdfs.client.HdfsClientConfigKeys;
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import org.apache.hadoop.hdfs.client.HdfsDataOutputStream;
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import org.apache.hadoop.hdfs.protocol.Block;
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import org.apache.hadoop.hdfs.protocol.DatanodeInfo;
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@ -74,7 +73,6 @@ import org.apache.hadoop.hdfs.protocol.HdfsConstants;
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import org.apache.hadoop.hdfs.protocol.LocatedBlock;
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import org.apache.hadoop.hdfs.protocol.LocatedBlocks;
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import org.apache.hadoop.hdfs.server.blockmanagement.BlockManager;
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import org.apache.hadoop.hdfs.server.common.HdfsServerConstants;
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import org.apache.hadoop.hdfs.server.datanode.DataNode;
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import org.apache.hadoop.hdfs.server.datanode.DataNodeTestUtils;
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import org.apache.hadoop.hdfs.server.datanode.SimulatedFSDataset;
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@ -380,10 +378,6 @@ public class TestFileCreation {
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SimulatedFSDataset.setFactory(conf);
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conf.setBoolean(DFSConfigKeys.DFS_PERMISSIONS_ENABLED_KEY, false);
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// Force NameNodeProxies' createNNProxyWithClientProtocol to give
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// up file creation after one failure.
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conf.setBoolean(DFSConfigKeys.DFS_CLIENT_TEST_NO_PROXY_RETRIES, true);
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final MiniDFSCluster cluster = new MiniDFSCluster.Builder(conf).build();
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FileSystem fs = cluster.getFileSystem();
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