Advanced ORC properties
Usually, you do not need to modify ORC properties, but occasionally, Cloudera Support advises making such changes. You use the Safety Valve feature in Cloudera Manager to change properties.
| Key | Default Setting | Notes |
|---|---|---|
| orc.compress | ZLIB | Compression type (NONE, ZLIB, SNAPPY). |
| orc.compress.size | 262,144 | Number of bytes in each compression block. |
| orc.stripe.size | 268,435,456 | Number of bytes in each stripe. |
| orc.row.index.stride | 10,000 | Number of rows between index entries (>= 1,000). |
| orc.create.index | true | Sets whether to create row indexes. |
| orc.bloom.filter.columns | -- | Comma-separated list of column names for which a Bloom filter must be created. |
| orc.bloom.filter.fpp | 0.05 | False positive probability for a Bloom filter. Must be greater than 0.0 and less than 1.0. |
