bin/hbase's logic of adding Hadoop jar files to the classpath is fragile when
presented with split packaged Hadoop 0.23 installation
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Key: HBASE-5286
URL: https://issues.apache.org/jira/browse/HBASE-5286
Project: HBase
Issue Type: Bug
Components: scripts
Affects Versions: 0.92.0
Reporter: Roman Shaposhnik
Assignee: Roman Shaposhnik
Here's the bit from bin/hbase that might need TLC now that Hadoop can be
spotted in the wild in split-package configuration:
{noformat}
#If avail, add Hadoop to the CLASSPATH and to the JAVA_LIBRARY_PATH
if [ ! -z $HADOOP_HOME ]; then
HADOOPCPPATH=""
if [ -z $HADOOP_CONF_DIR ]; then
HADOOPCPPATH=$(append_path "${HADOOPCPPATH}" "${HADOOP_HOME}/conf")
else
HADOOPCPPATH=$(append_path "${HADOOPCPPATH}" "${HADOOP_CONF_DIR}")
fi
if [ "`echo ${HADOOP_HOME}/hadoop-core*.jar`" !=
"${HADOOP_HOME}/hadoop-core*.jar" ] ; then
HADOOPCPPATH=$(append_path "${HADOOPCPPATH}" `ls
${HADOOP_HOME}/hadoop-core*.jar | head -1`)
else
HADOOPCPPATH=$(append_path "${HADOOPCPPATH}" `ls
${HADOOP_HOME}/hadoop-common*.jar | head -1`)
HADOOPCPPATH=$(append_path "${HADOOPCPPATH}" `ls
${HADOOP_HOME}/hadoop-hdfs*.jar | head -1`)
HADOOPCPPATH=$(append_path "${HADOOPCPPATH}" `ls
${HADOOP_HOME}/hadoop-mapred*.jar | head -1`)
fi
{noformat}
There's a couple of issues with the above code:
0. HADOOP_HOME is now deprecated in Hadoop 0.23
1. the list of jar files added to the class-path should be revised
2. we need to figure out a more robust way to get the jar files that are
needed to the classpath (things like hadoop-mapred*.jar tend to match src/test
jars as well)
Better yet, it would be useful to look into whether we can transition HBase's
bin/hbase onto using bin/hadoop as a launcher script instead of direct JAVA
invocations (Pig, Hive, Sqoop and Mahout already do that)
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