com.facebook.presto.hive

Interface LocationService

All Known Implementing Classes:

HiveLocationService

public interface LocationService

Method Summary

Modifier and Type	Method and Description
LocationHandle	forExistingTable(SemiTransactionalHiveMetastore metastore, ConnectorSession session, Table table)
LocationHandle	forNewTable(SemiTransactionalHiveMetastore metastore, ConnectorSession session, String schemaName, String tableName)
org.apache.hadoop.fs.Path	targetPath(LocationHandle locationHandle, Optional<String> partitionName) Target path for the specified new partition (or unpartitioned table).
org.apache.hadoop.fs.Path	targetPath(LocationHandle locationHandle, Partition partition, String partitionName) Target path for the specified existing partition.
org.apache.hadoop.fs.Path	targetPathRoot(LocationHandle locationHandle) Root directory of all paths that may be returned by targetPath.
Optional<org.apache.hadoop.fs.Path>	writePath(LocationHandle locationHandle, Optional<String> partitionName) Temporary path for writing to the specified partition (or unpartitioned table).
Optional<org.apache.hadoop.fs.Path>	writePathRoot(LocationHandle locationHandle) Root directory of all paths that may be returned by writePath.

Method Detail

forNewTable

LocationHandle forNewTable(SemiTransactionalHiveMetastore metastore,
                           ConnectorSession session,
                           String schemaName,
                           String tableName)

forExistingTable

LocationHandle forExistingTable(SemiTransactionalHiveMetastore metastore,
                                ConnectorSession session,
                                Table table)

targetPath

org.apache.hadoop.fs.Path targetPath(LocationHandle locationHandle,
                                     Partition partition,
                                     String partitionName)

Target path for the specified existing partition.

targetPath

org.apache.hadoop.fs.Path targetPath(LocationHandle locationHandle,
                                     Optional<String> partitionName)

Target path for the specified new partition (or unpartitioned table).

targetPathRoot

org.apache.hadoop.fs.Path targetPathRoot(LocationHandle locationHandle)

Root directory of all paths that may be returned by targetPath.

writePath

Optional<org.apache.hadoop.fs.Path> writePath(LocationHandle locationHandle,
                                              Optional<String> partitionName)

Temporary path for writing to the specified partition (or unpartitioned table).

When temporary path is not to be used, this function may return an empty Optional or a path same as the one returned from targetPath. When it is empty, special cleanups need to be carried out. Otherwise, it is not necessary.

A non-empty write path is required for new tables. However, it may be the same as targetPath.

writePathRoot

Optional<org.apache.hadoop.fs.Path> writePathRoot(LocationHandle locationHandle)

Root directory of all paths that may be returned by writePath.