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metastore/src/java/org/apache/hadoop/hive/metastore/HiveAlterHandler.java (lines 694 - 695) <https://reviews.apache.org/r/47353/#comment197856> I am referring to deleteTableColumnStatistics() here and subsequent updateColumnStatistics() in the following if () block. Both of these are independent calls which happens in their own transactions, which leaves a small window of inconsistent state. - Ashutosh Chauhan On May 13, 2016, 7:17 p.m., Aihua Xu wrote: > > ----------------------------------------------------------- > This is an automatically generated e-mail. To reply, visit: > https://reviews.apache.org/r/47353/ > ----------------------------------------------------------- > > (Updated May 13, 2016, 7:17 p.m.) > > > Review request for hive and Chaoyu Tang. > > > Repository: hive-git > > > Description > ------- > > HIVE-13616: Investigate renaming a table without invalidating the column stats > > > Diffs > ----- > > metastore/src/java/org/apache/hadoop/hive/metastore/HiveAlterHandler.java > 0652b9db1a4224262611ff9258e871647442cfeb > ql/src/test/queries/clientpositive/rename_table_update_column_stats.q > PRE-CREATION > ql/src/test/results/clientpositive/rename_table_update_column_stats.q.out > PRE-CREATION > > Diff: https://reviews.apache.org/r/47353/diff/ > > > Testing > ------- > > Tests have been run and the failed tests don't seem to be related. > > To carry over the column stats during renaming the table, the patch > 1. Save affected column stats > 2. Rename the table > 3. Write the saved column stats for the new table. > > In this order, column stats will find the foreign key when writing in 3). > > > Thanks, > > Aihua Xu > >
