spark git commit: [SPARK-25028][SQL] Avoid NPE when analyzing partition with NULL values

Repository: spark Updated Branches: refs/heads/branch-2.3 b9b35b959 -> 787790b3c [SPARK-25028][SQL] Avoid NPE when analyzing partition with NULL values ## What changes were proposed in this pull request? `ANALYZE TABLE ... PARTITION(...) COMPUTE STATISTICS` can fail with a NPE if a

spark git commit: [SPARK-25028][SQL] Avoid NPE when analyzing partition with NULL values

Repository: spark Updated Branches: refs/heads/master b804ca577 -> c220cc42a [SPARK-25028][SQL] Avoid NPE when analyzing partition with NULL values ## What changes were proposed in this pull request? `ANALYZE TABLE ... PARTITION(...) COMPUTE STATISTICS` can fail with a NPE if a partition