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Posted to common-commits@hadoop.apache.org by ra...@apache.org on 2017/08/27 07:15:37 UTC
[10/50] [abbrv] hadoop git commit: YARN-6999. Add log about how to
solve Error: Could not find or load main class
org.apache.hadoop.mapreduce.v2.app.MRAppMaster. (Linlin Zhou via gtcarrera9)
YARN-6999. Add log about how to solve Error: Could not find or load main class org.apache.hadoop.mapreduce.v2.app.MRAppMaster. (Linlin Zhou via gtcarrera9)
Project: http://git-wip-us.apache.org/repos/asf/hadoop/repo
Commit: http://git-wip-us.apache.org/repos/asf/hadoop/commit/3bee7046
Tree: http://git-wip-us.apache.org/repos/asf/hadoop/tree/3bee7046
Diff: http://git-wip-us.apache.org/repos/asf/hadoop/diff/3bee7046
Branch: refs/heads/HDFS-10285
Commit: 3bee7046c52bff681a5aecc956ba9be6c3543397
Parents: b89ffcf
Author: Li Lu <gt...@apache.org>
Authored: Fri Aug 25 22:43:25 2017 -0700
Committer: Li Lu <gt...@apache.org>
Committed: Fri Aug 25 22:43:25 2017 -0700
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.../launcher/ContainerLaunch.java | 27 +++++++++++++++++++-
1 file changed, 26 insertions(+), 1 deletion(-)
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http://git-wip-us.apache.org/repos/asf/hadoop/blob/3bee7046/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/main/java/org/apache/hadoop/yarn/server/nodemanager/containermanager/launcher/ContainerLaunch.java
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diff --git a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/main/java/org/apache/hadoop/yarn/server/nodemanager/containermanager/launcher/ContainerLaunch.java b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/main/java/org/apache/hadoop/yarn/server/nodemanager/containermanager/launcher/ContainerLaunch.java
index a0055c5..3f50c3f 100644
--- a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/main/java/org/apache/hadoop/yarn/server/nodemanager/containermanager/launcher/ContainerLaunch.java
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/main/java/org/apache/hadoop/yarn/server/nodemanager/containermanager/launcher/ContainerLaunch.java
@@ -564,9 +564,11 @@ public class ContainerLaunch implements Callable<Integer> {
errorFileIS = fileSystem.open(errorFile);
errorFileIS.readFully(startPosition, tailBuffer);
+ String tailBufferMsg = new String(tailBuffer, StandardCharsets.UTF_8);
diagnosticInfo.append("Last ").append(tailSizeInBytes)
.append(" bytes of ").append(errorFile.getName()).append(" :\n")
- .append(new String(tailBuffer, StandardCharsets.UTF_8));
+ .append(tailBufferMsg).append("\n")
+ .append(analysesErrorMsgOfContainerExitWithFailure(tailBufferMsg));
}
} catch (IOException e) {
LOG.error("Failed to get tail of the container's error log file", e);
@@ -580,6 +582,29 @@ public class ContainerLaunch implements Callable<Integer> {
diagnosticInfo.toString()));
}
+ private String analysesErrorMsgOfContainerExitWithFailure(String errorMsg) {
+ StringBuilder analysis = new StringBuilder();
+ if (errorMsg.indexOf("Error: Could not find or load main class"
+ + " org.apache.hadoop.mapreduce") != -1) {
+ analysis.append("Please check whether your etc/hadoop/mapred-site.xml "
+ + "contains the below configuration:\n");
+ analysis.append("<property>\n")
+ .append(" <name>yarn.app.mapreduce.am.env</name>\n")
+ .append(" <value>HADOOP_MAPRED_HOME=${full path of your hadoop "
+ + "distribution directory}</value>\n")
+ .append("</property>\n<property>\n")
+ .append(" <name>mapreduce.map.env</name>\n")
+ .append(" <value>HADOOP_MAPRED_HOME=${full path of your hadoop "
+ + "distribution directory}</value>\n")
+ .append("</property>\n<property>\n")
+ .append(" <name>mapreduce.reduce.e nv</name>\n")
+ .append(" <value>HADOOP_MAPRED_HOME=${full path of your hadoop "
+ + "distribution directory}</value>\n")
+ .append("</property>\n");
+ }
+ return analysis.toString();
+ }
+
protected String getPidFileSubpath(String appIdStr, String containerIdStr) {
return getContainerPrivateDir(appIdStr, containerIdStr) + Path.SEPARATOR
+ String.format(ContainerLaunch.PID_FILE_NAME_FMT, containerIdStr);
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