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HDFS-6089. Standby NN while transitioning to active throws a connection refused error when the prior active NN process is suspended. Contributed by Jing Zhao. 

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1579694 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Andrew Wang 2014-03-20 17:44:29 +00:00
parent f94a9c0bd0
commit 43c923e930
3 changed files with 12 additions and 3 deletions
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4
hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
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@ -482,6 +482,10 @@ Release 2.4.0 - UNRELEASED
HDFS-6107. When a block can't be cached due to limited space on the
DataNode, that block becomes uncacheable (cmccabe)
HDFS-6089. Standby NN while transitioning to active throws a connection
refused error when the prior active NN process is suspended.
(Jing Zhao via Andrew Wang)
BREAKDOWN OF HDFS-4685 SUBTASKS AND RELATED JIRAS
HDFS-5596. Implement RPC stubs. (Haohui Mai via cnauroth)

2
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/DFSConfigKeys.java
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@ -524,6 +524,8 @@ public class DFSConfigKeys extends CommonConfigurationKeys {
public static final int DFS_HA_LOGROLL_PERIOD_DEFAULT = 2 * 60; // 2m
public static final String DFS_HA_TAILEDITS_PERIOD_KEY = "dfs.ha.tail-edits.period";
public static final int DFS_HA_TAILEDITS_PERIOD_DEFAULT = 60; // 1m
public static final String DFS_HA_LOGROLL_RPC_TIMEOUT_KEY = "dfs.ha.log-roll.rpc.timeout";
public static final int DFS_HA_LOGROLL_RPC_TIMEOUT_DEFAULT = 20000; // 20s
public static final String DFS_HA_FENCE_METHODS_KEY = "dfs.ha.fencing.methods";
public static final String DFS_HA_AUTO_FAILOVER_ENABLED_KEY = "dfs.ha.automatic-failover.enabled";
public static final boolean DFS_HA_AUTO_FAILOVER_ENABLED_DEFAULT = false;

9
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/ha/EditLogTailer.java
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@ -135,9 +135,12 @@ public class EditLogTailer {
private NamenodeProtocol getActiveNodeProxy() throws IOException {
if (cachedActiveProxy == null) {
NamenodeProtocolPB proxy =
RPC.waitForProxy(NamenodeProtocolPB.class,
RPC.getProtocolVersion(NamenodeProtocolPB.class), activeAddr, conf);
int rpcTimeout = conf.getInt(
DFSConfigKeys.DFS_HA_LOGROLL_RPC_TIMEOUT_KEY,
DFSConfigKeys.DFS_HA_LOGROLL_RPC_TIMEOUT_DEFAULT);
NamenodeProtocolPB proxy = RPC.waitForProxy(NamenodeProtocolPB.class,
RPC.getProtocolVersion(NamenodeProtocolPB.class), activeAddr, conf,
rpcTimeout, Long.MAX_VALUE);
cachedActiveProxy = new NamenodeProtocolTranslatorPB(proxy);
}
assert cachedActiveProxy != null;