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The following page has been changed by stack: http://wiki.apache.org/hadoop/Hbase/HowToMigrate ------------------------------------------------------------------------------ I had to copy the hadoop-site.xml to a location where it would be picked up by the above script -- e.g. from my hadoop 0.19 install to my {{{$HBASE_HOME/conf}}} -- so the above script could find the right HDFS otherwise it was going against local filesystem. + In the head of 0.19 is a tool that will tell you if you have successfully major compacted your 0.19 data: + + {{{$ ./bin/hbase org.apache.hadoop.hbase.util.FSUtils}}} + + It will print out: + + {{{majorCompacted=true}}} + + If it prints false, do a {{{bin/hbase fs -lsr /}}} on your hbase directory and figure out what hasn't been major compacted. If a catalog table -- -ROOT- or .META. -- then use the above HRegion tool to compact. Otherwise, start up 0.19 again, fire up shell and try major compact again. + + ===== Can you back up your data? ===== Migration has been tested but if you have sufficient space in hdfs to make a copy of your hbase rootdir, do so. Just in case. Use hdfs distcp.
