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From "Ewan Higgs (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HDFS-11245) HDFS ignores HADOOP_CONF_DIR
Date Wed, 14 Dec 2016 13:28:58 GMT
Ewan Higgs created HDFS-11245:
---------------------------------

             Summary: HDFS ignores HADOOP_CONF_DIR
                 Key: HDFS-11245
                 URL: https://issues.apache.org/jira/browse/HDFS-11245
             Project: Hadoop HDFS
          Issue Type: Bug
          Components: hdfs
    Affects Versions: 3.0.0-beta1
         Environment: Linux
            Reporter: Ewan Higgs


It seems that HDFS on trunk is ignoring {{HADOOP_CONF_DIR}}. On {{branch-2}} I could export
{{HADOOP_CONF_DIR}} and use that to store my {{hdfs-site.xml}} and {{log4j.properties}}. Also,
even if hdfs can find the {{log4j.properties}}, it doesn't seem interested in opening and
loading it.

On Ubuntu 16.10:

{code}
$ source env.sh
$ cat env.sh 
#!/bin/bash
export JAVA_HOME=/usr/lib/jvm/java-8-oracle
export HADOOP_HOME="$HOME"/src/hadoop/hadoop-dist/target/hadoop-3.0.0-alpha2-SNAPSHOT
export HADOOP_LOG_DIR=""$(pwd)/log"
PATH="$HADOOP_HOME"/bin:$PATH
export HADOOP_CLASSPATH=$(hadoop classpath):"$HADOOP_HOME"/share/hadoop/tools/lib/*
export HADOOP_USER_CLASSPATH_FIRST=true
{code}


Then I set the HADOOP_CONF_DIR:
{code}
$ export HADOOP_CONF_DIR="$(pwd)/conf/nn"
$ ls $HADOOP_CONF_DIR
hadoop-env.sh  hdfs-site.xml  log4j.properties
{code}

Now, we try to run a namenode:
{code}
$ hdfs namenode
2016-12-14 14:04:51,193 ERROR [main] namenode.NameNode: Failed to start namenode.
java.lang.IllegalArgumentException: Invalid URI for NameNode address (check fs.defaultFS):
file:/// has no authority.
        at org.apache.hadoop.hdfs.DFSUtilClient.getNNAddress(DFSUtilClient.java:648)
        at org.apache.hadoop.hdfs.DFSUtilClient.getNNAddressCheckLogical(DFSUtilClient.java:677)
        at org.apache.hadoop.hdfs.DFSUtilClient.getNNAddress(DFSUtilClient.java:639)
        at org.apache.hadoop.hdfs.server.namenode.NameNode.getRpcServerAddress(NameNode.java:556)
        at org.apache.hadoop.hdfs.server.namenode.NameNode.loginAsNameNodeUser(NameNode.java:687)
        at org.apache.hadoop.hdfs.server.namenode.NameNode.initialize(NameNode.java:707)
        at org.apache.hadoop.hdfs.server.namenode.NameNode.<init>(NameNode.java:937)
        at org.apache.hadoop.hdfs.server.namenode.NameNode.<init>(NameNode.java:916)
        at org.apache.hadoop.hdfs.server.namenode.NameNode.createNameNode(NameNode.java:1633)
        at org.apache.hadoop.hdfs.server.namenode.NameNode.main(NameNode.java:1701)
{code}

This is weird. We have the {{fs.defaultFS}} set:

{code}
$ grep -n2 fs.defaultFS $HADOOP_CONF_DIR/hdfs-site.xml
3-<configuration>
4-    <property>
5:        <name>fs.defaultFS</name>
6-        <value>hdfs://localhost:60010</value>
7-    </property>
{code}

So if isn't finding this config. Where is is looking and finding {{file:///}}?
{code}
$ strace -f -eopen,stat hdfs namenode 2>&1 | grep hdfs-site.xml
[pid 16271] stat("/home/ehigg90120/src/hadoop/hadoop-dist/target/hadoop-3.0.0-alpha2-SNAPSHOT/share/hadoop/common/jdiff/hdfs-site.xml",
0x7f05eb6d21d0) = -1 ENOENT (No such file or directory)
[pid 16271] stat("/home/ehigg90120/src/hadoop/hadoop-dist/target/hadoop-3.0.0-alpha2-SNAPSHOT/share/hadoop/common/lib/hdfs-site.xml",
0x7f05eb6d21d0) = -1 ENOENT (No such file or directory)
[pid 16271] stat("/home/ehigg90120/src/hadoop/hadoop-dist/target/hadoop-3.0.0-alpha2-SNAPSHOT/share/hadoop/common/sources/hdfs-site.xml",
0x7f05eb6d21d0) = -1 ENOENT (No such file or directory)
[pid 16271] stat("/home/ehigg90120/src/hadoop/hadoop-dist/target/hadoop-3.0.0-alpha2-SNAPSHOT/share/hadoop/common/templates/hdfs-site.xml",
0x7f05eb6d21d0) = -1 ENOENT (No such file or directory)
[pid 16271] stat("/home/ehigg90120/src/hadoop/hadoop-dist/target/hadoop-3.0.0-alpha2-SNAPSHOT/share/hadoop/common/webapps/hdfs-site.xml",
0x7f05eb6d21d0) = -1 ENOENT (No such file or directory)
[pid 16271] stat("/home/ehigg90120/src/hadoop/hadoop-dist/target/hadoop-3.0.0-alpha2-SNAPSHOT/share/hadoop/hdfs/jdiff/hdfs-site.xml",
0x7f05eb6d21d0) = -1 ENOENT (No such file or directory)
[pid 16271] stat("/home/ehigg90120/src/hadoop/hadoop-dist/target/hadoop-3.0.0-alpha2-SNAPSHOT/share/hadoop/hdfs/lib/hdfs-site.xml",
0x7f05eb6d21d0) = -1 ENOENT (No such file or directory)
[pid 16271] stat("/home/ehigg90120/src/hadoop/hadoop-dist/target/hadoop-3.0.0-alpha2-SNAPSHOT/share/hadoop/hdfs/sources/hdfs-site.xml",
0x7f05eb6d21d0) = -1 ENOENT (No such file or directory)
[pid 16271] stat("/home/ehigg90120/src/hadoop/hadoop-dist/target/hadoop-3.0.0-alpha2-SNAPSHOT/share/hadoop/hdfs/templates/hdfs-site.xml",
{st_mode=S_IFREG|0664, st_size=775, ...}) = 0
[pid 16271] stat("/home/ehigg90120/src/hadoop/hadoop-dist/target/hadoop-3.0.0-alpha2-SNAPSHOT/share/hadoop/hdfs/templates/hdfs-site.xml",
{st_mode=S_IFREG|0664, st_size=775, ...}) = 0
[pid 16271] open("/home/ehigg90120/src/hadoop/hadoop-dist/target/hadoop-3.0.0-alpha2-SNAPSHOT/share/hadoop/hdfs/templates/hdfs-site.xml",
O_RDONLY) = 218
[pid 16271] stat("/home/ehigg90120/src/hadoop/hadoop-dist/target/hadoop-3.0.0-alpha2-SNAPSHOT/share/hadoop/common/jdiff/hdfs-site.xml",
0x7f05eb6d17e0) = -1 ENOENT (No such file or directory)
[pid 16271] stat("/home/ehigg90120/src/hadoop/hadoop-dist/target/hadoop-3.0.0-alpha2-SNAPSHOT/share/hadoop/common/lib/hdfs-site.xml",
0x7f05eb6d17e0) = -1 ENOENT (No such file or directory)
[pid 16271] stat("/home/ehigg90120/src/hadoop/hadoop-dist/target/hadoop-3.0.0-alpha2-SNAPSHOT/share/hadoop/common/sources/hdfs-site.xml",
0x7f05eb6d17e0) = -1 ENOENT (No such file or directory)
[pid 16271] stat("/home/ehigg90120/src/hadoop/hadoop-dist/target/hadoop-3.0.0-alpha2-SNAPSHOT/share/hadoop/common/templates/hdfs-site.xml",
0x7f05eb6d17e0) = -1 ENOENT (No such file or directory)
[pid 16271] stat("/home/ehigg90120/src/hadoop/hadoop-dist/target/hadoop-3.0.0-alpha2-SNAPSHOT/share/hadoop/common/webapps/hdfs-site.xml",
0x7f05eb6d17e0) = -1 ENOENT (No such file or directory)
[pid 16271] stat("/home/ehigg90120/src/hadoop/hadoop-dist/target/hadoop-3.0.0-alpha2-SNAPSHOT/share/hadoop/hdfs/jdiff/hdfs-site.xml",
0x7f05eb6d17e0) = -1 ENOENT (No such file or directory)
[pid 16271] stat("/home/ehigg90120/src/hadoop/hadoop-dist/target/hadoop-3.0.0-alpha2-SNAPSHOT/share/hadoop/hdfs/lib/hdfs-site.xml",
0x7f05eb6d17e0) = -1 ENOENT (No such file or directory)
[pid 16271] stat("/home/ehigg90120/src/hadoop/hadoop-dist/target/hadoop-3.0.0-alpha2-SNAPSHOT/share/hadoop/hdfs/sources/hdfs-site.xml",
0x7f05eb6d17e0) = -1 ENOENT (No such file or directory)
[pid 16271] stat("/home/ehigg90120/src/hadoop/hadoop-dist/target/hadoop-3.0.0-alpha2-SNAPSHOT/share/hadoop/hdfs/templates/hdfs-site.xml",
{st_mode=S_IFREG|0664, st_size=775, ...}) = 0
[pid 16271] stat("/home/ehigg90120/src/hadoop/hadoop-dist/target/hadoop-3.0.0-alpha2-SNAPSHOT/share/hadoop/hdfs/templates/hdfs-site.xml",
{st_mode=S_IFREG|0664, st_size=775, ...}) = 0
[pid 16271] open("/home/ehigg90120/src/hadoop/hadoop-dist/target/hadoop-3.0.0-alpha2-SNAPSHOT/share/hadoop/hdfs/templates/hdfs-site.xml",
O_RDONLY) = 218
[pid 16271] stat("/home/ehigg90120/src/hadoop/hadoop-dist/target/hadoop-3.0.0-alpha2-SNAPSHOT/share/hadoop/common/jdiff/hdfs-site.xml",
0x7f05eb6d2070) = -1 ENOENT (No such file or directory)
[pid 16271] stat("/home/ehigg90120/src/hadoop/hadoop-dist/target/hadoop-3.0.0-alpha2-SNAPSHOT/share/hadoop/common/lib/hdfs-site.xml",
0x7f05eb6d2070) = -1 ENOENT (No such file or directory)
[pid 16271] stat("/home/ehigg90120/src/hadoop/hadoop-dist/target/hadoop-3.0.0-alpha2-SNAPSHOT/share/hadoop/common/sources/hdfs-site.xml",
0x7f05eb6d2070) = -1 ENOENT (No such file or directory)
[pid 16271] stat("/home/ehigg90120/src/hadoop/hadoop-dist/target/hadoop-3.0.0-alpha2-SNAPSHOT/share/hadoop/common/templates/hdfs-site.xml",
0x7f05eb6d2070) = -1 ENOENT (No such file or directory)
[pid 16271] stat("/home/ehigg90120/src/hadoop/hadoop-dist/target/hadoop-3.0.0-alpha2-SNAPSHOT/share/hadoop/common/webapps/hdfs-site.xml",
0x7f05eb6d2070) = -1 ENOENT (No such file or directory)
[pid 16271] stat("/home/ehigg90120/src/hadoop/hadoop-dist/target/hadoop-3.0.0-alpha2-SNAPSHOT/share/hadoop/hdfs/jdiff/hdfs-site.xml",
0x7f05eb6d2070) = -1 ENOENT (No such file or directory)
[pid 16271] stat("/home/ehigg90120/src/hadoop/hadoop-dist/target/hadoop-3.0.0-alpha2-SNAPSHOT/share/hadoop/hdfs/lib/hdfs-site.xml",
0x7f05eb6d2070) = -1 ENOENT (No such file or directory)
[pid 16271] stat("/home/ehigg90120/src/hadoop/hadoop-dist/target/hadoop-3.0.0-alpha2-SNAPSHOT/share/hadoop/hdfs/sources/hdfs-site.xml",
0x7f05eb6d2070) = -1 ENOENT (No such file or directory)
[pid 16271] stat("/home/ehigg90120/src/hadoop/hadoop-dist/target/hadoop-3.0.0-alpha2-SNAPSHOT/share/hadoop/hdfs/templates/hdfs-site.xml",
{st_mode=S_IFREG|0664, st_size=775, ...}) = 0
[pid 16271] stat("/home/ehigg90120/src/hadoop/hadoop-dist/target/hadoop-3.0.0-alpha2-SNAPSHOT/share/hadoop/hdfs/templates/hdfs-site.xml",
{st_mode=S_IFREG|0664, st_size=775, ...}) = 0
[pid 16271] open("/home/ehigg90120/src/hadoop/hadoop-dist/target/hadoop-3.0.0-alpha2-SNAPSHOT/share/hadoop/hdfs/templates/hdfs-site.xml",
O_RDONLY) = 218
{code}

So it's ignoring {{HADOOP_CONF_DIR}}. We can work around it using {{-conf $(pwd)/conf/nn/hdfs-site.xml}}:
{code}
$ strace -f -eopen,stat hdfs namenode -conf $(pwd)/conf/nn/hdfs-site.xml 2>&1 | grep
hdfs-site.xml
[pid 16493] stat("/home/ehigg90120/src/hadoop/hadoop-dist/target/hadoop-3.0.0-alpha2-SNAPSHOT/share/hadoop/common/jdiff/hdfs-site.xml",
0x7f9f60afb1d0) = -1 ENOENT (No such file or directory)
[pid 16493] stat("/home/ehigg90120/src/hadoop/hadoop-dist/target/hadoop-3.0.0-alpha2-SNAPSHOT/share/hadoop/common/lib/hdfs-site.xml",
0x7f9f60afb1d0) = -1 ENOENT (No such file or directory)
[pid 16493] stat("/home/ehigg90120/src/hadoop/hadoop-dist/target/hadoop-3.0.0-alpha2-SNAPSHOT/share/hadoop/common/sources/hdfs-site.xml",
0x7f9f60afb1d0) = -1 ENOENT (No such file or directory)
[pid 16493] stat("/home/ehigg90120/src/hadoop/hadoop-dist/target/hadoop-3.0.0-alpha2-SNAPSHOT/share/hadoop/common/templates/hdfs-site.xml",
0x7f9f60afb1d0) = -1 ENOENT (No such file or directory)
[pid 16493] stat("/home/ehigg90120/src/hadoop/hadoop-dist/target/hadoop-3.0.0-alpha2-SNAPSHOT/share/hadoop/common/webapps/hdfs-site.xml",
0x7f9f60afb1d0) = -1 ENOENT (No such file or directory)
[pid 16493] stat("/home/ehigg90120/src/hadoop/hadoop-dist/target/hadoop-3.0.0-alpha2-SNAPSHOT/share/hadoop/hdfs/jdiff/hdfs-site.xml",
0x7f9f60afb1d0) = -1 ENOENT (No such file or directory)
[pid 16493] stat("/home/ehigg90120/src/hadoop/hadoop-dist/target/hadoop-3.0.0-alpha2-SNAPSHOT/share/hadoop/hdfs/lib/hdfs-site.xml",
0x7f9f60afb1d0) = -1 ENOENT (No such file or directory)
[pid 16493] stat("/home/ehigg90120/src/hadoop/hadoop-dist/target/hadoop-3.0.0-alpha2-SNAPSHOT/share/hadoop/hdfs/sources/hdfs-site.xml",
0x7f9f60afb1d0) = -1 ENOENT (No such file or directory)
[pid 16493] stat("/home/ehigg90120/src/hadoop/hadoop-dist/target/hadoop-3.0.0-alpha2-SNAPSHOT/share/hadoop/hdfs/templates/hdfs-site.xml",
{st_mode=S_IFREG|0664, st_size=775, ...}) = 0
[pid 16493] stat("/home/ehigg90120/src/hadoop/hadoop-dist/target/hadoop-3.0.0-alpha2-SNAPSHOT/share/hadoop/hdfs/templates/hdfs-site.xml",
{st_mode=S_IFREG|0664, st_size=775, ...}) = 0
[pid 16493] open("/home/ehigg90120/src/hadoop/hadoop-dist/target/hadoop-3.0.0-alpha2-SNAPSHOT/share/hadoop/hdfs/templates/hdfs-site.xml",
O_RDONLY) = 218
[pid 16493] stat("/home/ehigg90120/src/hadoop-run/tutorial/conf/nn/hdfs-site.xml", {st_mode=S_IFREG|0644,
st_size=2107, ...}) = 0
[pid 16493] open("/home/ehigg90120/src/hadoop-run/tutorial/conf/nn/hdfs-site.xml", O_RDONLY)
= 218

------8<------
{code}

Great! However, it's not finding my  log4j.properties for some reason. This is annoying because
hdfs isn't printing anything or logging anywhere. Where is it looking?
{code}
$ strace -f hdfs namenode -conf $(pwd)/conf/nn/hdfs-site.xml 2>&1 | grep log4j.properties
stat("/home/ehigg90120/src/hadoop-run/tutorial/conf/nn/log4j.properties", {st_mode=S_IFREG|0644,
st_size=13641, ...}) = 0
{code}

It found it, but it only statted it. It never opened it! So it seems there's at least one
bug here where {{log4j.properties}} is being ignored. But shouldn't {{HADOOP_OPTS}} be set
and configuring it to print to the console and to my log dir?

{code}
$ hdfs --debug namenode -conf $(pwd)/conf/nn/hdfs-site.xml 2>&1 | grep HADOOP_OPTS
DEBUG: HADOOP_OPTS accepted -Dhdfs.audit.logger=INFO,NullAppender
DEBUG: Appending HDFS_NAMENODE_OPTS onto HADOOP_OPTS
DEBUG: HADOOP_OPTS accepted -Dyarn.log.dir=/home/ehigg90120/src/hadoop-run/tutorial/log
DEBUG: HADOOP_OPTS accepted -Dyarn.log.file=hadoop.log
DEBUG: HADOOP_OPTS accepted -Dyarn.home.dir=/home/ehigg90120/src/hadoop/hadoop-dist/target/hadoop-3.0.0-alpha2-SNAPSHOT
DEBUG: HADOOP_OPTS accepted -Dyarn.root.logger=INFO,console
DEBUG: HADOOP_OPTS accepted -Djava.library.path=/home/ehigg90120/src/hadoop/hadoop-dist/target/hadoop-3.0.0-alpha2-SNAPSHOT/lib/native
DEBUG: HADOOP_OPTS accepted -Dhadoop.log.dir=/home/ehigg90120/src/hadoop-run/tutorial/log
DEBUG: HADOOP_OPTS accepted -Dhadoop.log.file=hadoop.log
DEBUG: HADOOP_OPTS accepted -Dhadoop.home.dir=/home/ehigg90120/src/hadoop/hadoop-dist/target/hadoop-3.0.0-alpha2-SNAPSHOT
DEBUG: HADOOP_OPTS accepted -Dhadoop.id.str=ehigg90120
DEBUG: HADOOP_OPTS accepted -Dhadoop.root.logger=INFO,console
DEBUG: HADOOP_OPTS accepted -Dhadoop.policy.file=hadoop-policy.xml
DEBUG: HADOOP_OPTS declined -Dhadoop.security.logger=INFO,NullAppender
DEBUG: Final HADOOP_OPTS: -Djava.net.preferIPv4Stack=true -Dhdfs.audit.logger=INFO,NullAppender
-Dhadoop.security.logger=INFO,RFAS -Dyarn.log.dir=/home/ehigg90120/src/hadoop-run/tutorial/log
-Dyarn.log.file=hadoop.log -Dyarn.home.dir=/home/ehigg90120/src/hadoop/hadoop-dist/target/hadoop-3.0.0-alpha2-SNAPSHOT
-Dyarn.root.logger=INFO,console -Djava.library.path=/home/ehigg90120/src/hadoop/hadoop-dist/target/hadoop-3.0.0-alpha2-SNAPSHOT/lib/native
-Dhadoop.log.dir=/home/ehigg90120/src/hadoop-run/tutorial/log -Dhadoop.log.file=hadoop.log
-Dhadoop.home.dir=/home/ehigg90120/src/hadoop/hadoop-dist/target/hadoop-3.0.0-alpha2-SNAPSHOT
-Dhadoop.id.str=ehigg90120 -Dhadoop.root.logger=INFO,console -Dhadoop.policy.file=hadoop-policy.xml
{code}

So it seems it is being configured and passed to the namenode. It's just not obeying it as
far as I can see. 

So maybe there are two possibly related bugs:

1. {{HADOOP_CONF_DIR}} is ignored
2. The logger is not using {{log4j.properties}} or the command line. I would expect it to
use the {{log4j.properties}} in the {{HADOOP_CONF_DIR}}.

I feel like I must be misunderstanding something since this seems like a pretty big issue
but I didn't find any open tickets about it or any tickets describing a new way of configuring
clusters.



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