impala::HdfsParquetScanner::SchemaNode Struct Reference

Internal representation of a column schema (including nested-type columns). More...

Collaboration diagram for impala::HdfsParquetScanner::SchemaNode:

Public Member Functions
	SchemaNode ()
std::string	DebugString (int indent=0) const

Public Attributes
const parquet::SchemaElement *	element
	The corresponding schema element defined in the file metadata. More...
int	col_idx
int	max_def_level
std::vector< SchemaNode >	children
	Any nested schema nodes. Empty for non-nested types. More...
SlotDescriptor *	slot_desc

Detailed Description

Internal representation of a column schema (including nested-type columns).

Definition at line 90 of file hdfs-parquet-scanner.h.

Constructor & Destructor Documentation

impala::HdfsParquetScanner::SchemaNode::SchemaNode ( )

inline

Definition at line 107 of file hdfs-parquet-scanner.h.

Member Function Documentation

string HdfsParquetScanner::SchemaNode::DebugString

(

int

indent = 0

)

const

Definition at line 1443 of file hdfs-parquet-scanner.cc.

References PrintParquetType(), and PrintRepetitionType().

Referenced by impala::HdfsParquetScanner::CreateColumnReaders().

Member Data Documentation

std::vector<SchemaNode> impala::HdfsParquetScanner::SchemaNode::children

Any nested schema nodes. Empty for non-nested types.

Definition at line 103 of file hdfs-parquet-scanner.h.

Referenced by impala::HdfsParquetScanner::CreateColumnReaders().

int impala::HdfsParquetScanner::SchemaNode::col_idx

The index into the RowGroup::columns list if this column is materialized in the file (i.e. it's a scalar type). -1 for nested types.

Definition at line 96 of file hdfs-parquet-scanner.h.

Referenced by impala::HdfsParquetScanner::BaseColumnReader::BaseColumnReader(), and impala::HdfsParquetScanner::BaseColumnReader::col_idx().

const parquet::SchemaElement* impala::HdfsParquetScanner::SchemaNode::element

The corresponding schema element defined in the file metadata.

Definition at line 92 of file hdfs-parquet-scanner.h.

Referenced by impala::HdfsParquetScanner::BaseColumnReader::schema_element().

int impala::HdfsParquetScanner::SchemaNode::max_def_level

The maximum definition level of this column, i.e., the definition level that corresponds to a non-NULL value. Valid values are >= 0.

Definition at line 100 of file hdfs-parquet-scanner.h.

Referenced by impala::HdfsParquetScanner::BaseColumnReader::BaseColumnReader(), and impala::HdfsParquetScanner::BaseColumnReader::max_def_level().

SlotDescriptor* impala::HdfsParquetScanner::SchemaNode::slot_desc

Definition at line 105 of file hdfs-parquet-scanner.h.

Referenced by impala::HdfsParquetScanner::BaseColumnReader::BaseColumnReader(), impala::HdfsParquetScanner::CreateColumnReaders(), impala::HdfsParquetScanner::CreateReader(), and impala::HdfsParquetScanner::BaseColumnReader::slot_desc().

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The documentation for this struct was generated from the following files:

• be/src/exec/hdfs-parquet-scanner.h
• be/src/exec/hdfs-parquet-scanner.cc