Re: what does MM stand for

MM -> Micro Managed Hive managed tables supporting Insert-only operations with ACID semantics are called MM (Micro-Managed) OR Insert-Only ACID tables. Supports all file formats. >From say https://docs.cloudera.com/HDPDocuments/DLM1/DLM-1.5.1/administration/content/dlm_acid_tables_replication.ht

what does MM stand for

Hello Apologies for the silly question. What you say "MM tables", what does MM stand for? HIVE_MM_ALLOW_ORIGINALS("hive.mm.allow.originals", false,     "Whether to allow original files in MM tables. Conversion to MM may be expensive if\n" +     "this is set to false, however unless MA