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new 90775b4832 Minor: Update documentation for
`datafusion.execution.parquet.enable_page_index` (#6342)
90775b4832 is described below
commit 90775b4832fcc066d41025bc3ab29a5d8b8fbccf
Author: Andrew Lamb <and...@nerdnetworks.org>
AuthorDate: Sat May 13 00:57:58 2023 -0400
Minor: Update documentation for
`datafusion.execution.parquet.enable_page_index` (#6342)
---
datafusion/common/src/config.rs | 5 +++--
docs/source/user-guide/configs.md | 2 +-
2 files changed, 4 insertions(+), 3 deletions(-)
diff --git a/datafusion/common/src/config.rs b/datafusion/common/src/config.rs
index 0d86131db1..c5ce3540fc 100644
--- a/datafusion/common/src/config.rs
+++ b/datafusion/common/src/config.rs
@@ -241,8 +241,9 @@ config_namespace! {
config_namespace! {
/// Options related to reading of parquet files
pub struct ParquetOptions {
- /// If true, uses parquet data page level metadata (Page Index)
statistics
- /// to reduce the number of rows decoded.
+ /// If true, reads the Parquet data page level metadata (the
+ /// Page Index), if present, to reduce the I/O and number of
+ /// rows decoded.
pub enable_page_index: bool, default = true
/// If true, the parquet reader attempts to skip entire row groups
based
diff --git a/docs/source/user-guide/configs.md
b/docs/source/user-guide/configs.md
index d64f327e06..32001b9664 100644
--- a/docs/source/user-guide/configs.md
+++ b/docs/source/user-guide/configs.md
@@ -49,7 +49,7 @@ Environment variables are read during `SessionConfig`
initialisation so they mus
| datafusion.execution.collect_statistics | false |
Should DataFusion collect statistics after listing files
[...]
| datafusion.execution.target_partitions | 0 |
Number of partitions for query execution. Increasing partitions can increase
concurrency. Defaults to the number of CPU cores on the system
[...]
| datafusion.execution.time_zone | +00:00 |
The default time zone Some functions, e.g. `EXTRACT(HOUR from SOME_TIME)`,
shift the underlying datetime according to this time zone, and then extract the
hour
[...]
-| datafusion.execution.parquet.enable_page_index | true | If
true, uses parquet data page level metadata (Page Index) statistics to reduce
the number of rows decoded.
[...]
+| datafusion.execution.parquet.enable_page_index | true | If
true, reads the Parquet data page level metadata (the Page Index), if present,
to reduce the I/O and number of rows decoded.
[...]
| datafusion.execution.parquet.pruning | true | If
true, the parquet reader attempts to skip entire row groups based on the
predicate in the query and the metadata (min/max values) stored in the parquet
file
[...]
| datafusion.execution.parquet.skip_metadata | true | If
true, the parquet reader skip the optional embedded metadata that may be in the
file Schema. This setting can help avoid schema conflicts when querying
multiple parquet files with schemas containing compatible types but different
metadata
[...]
| datafusion.execution.parquet.metadata_size_hint | NULL | If
specified, the parquet reader will try and fetch the last `size_hint` bytes of
the parquet file optimistically. If not specified, two reads are required: One
read to fetch the 8-byte parquet footer and another to fetch the metadata
length encoded in the footer
[...]
