org.apache.flink.orc.shim

Interface OrcShim<BATCH>

All Superinterfaces:

Serializable

All Known Implementing Classes:

OrcNoHiveShim, OrcShimV200, OrcShimV210, OrcShimV230

public interface OrcShim<BATCH>
extends Serializable

A shim layer to support orc with different dependents versions of Hive.

Method Summary

Modifier and Type	Method and Description
OrcVectorizedBatchWrapper<BATCH>	createBatchWrapper(org.apache.orc.TypeDescription schema, int batchSize)
org.apache.orc.RecordReader	createRecordReader(org.apache.hadoop.conf.Configuration conf, org.apache.orc.TypeDescription schema, int[] selectedFields, List<OrcFilters.Predicate> conjunctPredicates, Path path, long splitStart, long splitLength) Create orc RecordReader from conf, schema and etc...
static OrcShim<org.apache.hadoop.hive.ql.exec.vector.VectorizedRowBatch>	createShim(String hiveVersion) Create shim from hive version.
static OrcShim<org.apache.hadoop.hive.ql.exec.vector.VectorizedRowBatch>	defaultShim() Default with orc dependent, we should use v2.3.0.
boolean	nextBatch(org.apache.orc.RecordReader reader, BATCH rowBatch) Read the next row batch.

Method Detail

createRecordReader

org.apache.orc.RecordReader createRecordReader(org.apache.hadoop.conf.Configuration conf,
                                               org.apache.orc.TypeDescription schema,
                                               int[] selectedFields,
                                               List<OrcFilters.Predicate> conjunctPredicates,
                                               Path path,
                                               long splitStart,
                                               long splitLength)
                                        throws IOException

Create orc RecordReader from conf, schema and etc...

Throws:

IOException

createBatchWrapper

OrcVectorizedBatchWrapper<BATCH> createBatchWrapper(org.apache.orc.TypeDescription schema,
                                                    int batchSize)

nextBatch

boolean nextBatch(org.apache.orc.RecordReader reader,
                  BATCH rowBatch)
           throws IOException

Read the next row batch.

Throws:

IOException

defaultShim

static OrcShim<org.apache.hadoop.hive.ql.exec.vector.VectorizedRowBatch> defaultShim()

Default with orc dependent, we should use v2.3.0.

createShim

static OrcShim<org.apache.hadoop.hive.ql.exec.vector.VectorizedRowBatch> createShim(String hiveVersion)

Create shim from hive version.