Thanks Mark, Recover partition feature will satisfy my needs; but MSCK Repair Partition < tablename> option is not working for me. It does not give any error; but does not add any partitions either. It looks like it adds partitions only when the sub-folder is empty; but not when the sub-folder has the data files. I see a fix to this issue here. https://issues.apache.org/jira/browse/HIVE-3231?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
But probably it's not commited yet, since the final result says 'ABORTED". Thanks, Sadu On Mon, Jan 28, 2013 at 10:47 PM, Mark Grover <grover.markgro...@gmail.com>wrote: > Sadananda, > See if this helps: > https://cwiki.apache.org/confluence/display/Hive/LanguageManual+DDL#LanguageManualDDL-Recoverpartitions > > > On Mon, Jan 28, 2013 at 8:05 PM, Sadananda Hegde <saduhe...@gmail.com>wrote: > >> Hello, >> >> My hive table is partitioned by year, month and day. I have defined it as >> external table. The M/R job correctly loads the files into the daily >> subfolders. The hdfs files will be loaded to >> <hivetable>/year=yyyy/month=mm/day=dd/ folders by the scheduled M/R jobs. >> The M/R job has some business logic in determining the values for year, >> month and day; so one run might create / load files into multiple sub >> -folders (multiple days). I am able to query the tables after adding >> partitions using ALTER TABLE ADD PARTITION statement. But how do I automate >> the partition creation step? Basically this script needs to identify the >> subfolders created by the M/R job and create corresponding ALTER TABLE ADD >> PARTITION statements. >> >> For example, say the M/R job loads files into the following 3 sub-folders >> >> /user/hive/warehouse/sales/year=2013/month=1/day=21 >> /user/hive/warehouse/sales/year=2013/month=1/day=22 >> /user/hive/warehouse/sales/year=2013/month=1/day=23 >> >> Then it should create 3 alter table statements >> >> ALTER TABLE sales ADD PARTITION (year=2013, month=1, day=21); >> ALTER TABLE sales ADD PARTITION (year=2013, month=1, day=22); >> ALTER TABLE sales ADD PARTITION (year=2013, month=1, day=23); >> >> I thought of changing M/R jobs to load all files into same folder, >> then first load the files into non-partitioned table and then to load the >> partitioned table from non-partitioned table (using dynamic partition); but >> would prefer to avoid that extra step if possible (esp. since data is >> already in the correct sub-folders). >> >> Any help would greately be appreciated. >> >> Regards, >> Sadu >> >> >> > >
