[HBASE-9097] Set HBASE_CLASSPATH before rest of the classpath

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 0.98.0, 0.95.2, 0.94.11
• Fix Version/s: 0.98.0, 0.95.2, 0.94.11
• Component/s: scripts
• Release Note: Move HBASE_CLASSPATH to the beginning of the CLASSPATH in bin/hbase script.
• Assignee: Jesse Yates
• Reporter: Jesse Yates
• Created: 31/Jul/13 01:40
• Updated: 11/Oct/13 18:20
• Resolved: 09/Aug/13 19:26

Description

We encountered this when one of the hadoop test jars (specifically hadoop-mapreduce-client-jobclient-2.0.0-cdh4.3.0-tests.jar, but that's beside the point) had an hdfs-site.xml. This clobbered the hdfs-site.xml that we included on the classpath via HBASE_CLASSPATH in hbase-env.sh, meaning the master didn't start in HA NN mode, because the proxy-provider wasn't found in the hdfs-site.xml from the test jar (even though it was in our config file) because that was the first resolution of that file.

This should be a fairly simple fix in bin/hbase, but has some potentially wide-ranging effects on existing installs that just 'happen' to work.

Generally, I'd expect things set on the HBASE_CLASSPATH to take precedence over anything else when starting the hbase daemon.

Issue Links

• relates to: AMBARI-3029 Ambari clusters HBASE_CLASSPATH setting is resulting in different configs not getting used.
• relates to: HBASE-9745 Append HBASE_CLASSPATH to end of Java classpath and use another env var for prefix