org.apache.hadoop.hive.ql.parse
Class EximUtil

java.lang.Object
  org.apache.hadoop.hive.ql.parse.EximUtil

public class EximUtil
extends Object

EximUtil. Utility methods for the export/import semantic analyzers.

Field Summary

static String	METADATA_FORMAT_FORWARD_COMPATIBLE_VERSION
static String	METADATA_FORMAT_VERSION

Method Summary

static void	createExportDump(org.apache.hadoop.fs.FileSystem fs, org.apache.hadoop.fs.Path metadataPath, Table tableHandle, List<Partition> partitions)
static void	doCheckCompatibility(String currVersion, String version, String fcVersion)
static Map<String,String>	makePartSpec(List<FieldSchema> partCols, List<String> partVals) Return the partition specification from the specified keys and values
static Map.Entry<Table,List<Partition>>	readMetaData(org.apache.hadoop.fs.FileSystem fs, org.apache.hadoop.fs.Path metadataPath)
static String	relativeToAbsolutePath(HiveConf conf, String location)
static boolean	schemaCompare(List<FieldSchema> newSchema, List<FieldSchema> oldSchema) Compares the schemas - names, types and order, but ignoring comments

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

METADATA_FORMAT_VERSION

public static final String METADATA_FORMAT_VERSION

See Also:

Constant Field Values

METADATA_FORMAT_FORWARD_COMPATIBLE_VERSION

public static final String METADATA_FORMAT_FORWARD_COMPATIBLE_VERSION

Method Detail

relativeToAbsolutePath

public static String relativeToAbsolutePath(HiveConf conf,
                                            String location)
                                     throws SemanticException

Throws:

SemanticException

createExportDump

public static void createExportDump(org.apache.hadoop.fs.FileSystem fs,
                                    org.apache.hadoop.fs.Path metadataPath,
                                    Table tableHandle,
                                    List<Partition> partitions)
                             throws SemanticException,
                                    IOException

Throws:

SemanticException

IOException

readMetaData

public static Map.Entry<Table,List<Partition>> readMetaData(org.apache.hadoop.fs.FileSystem fs,
                                                            org.apache.hadoop.fs.Path metadataPath)
                                                     throws IOException,
                                                            SemanticException

Throws:

IOException

SemanticException

doCheckCompatibility

public static void doCheckCompatibility(String currVersion,
                                        String version,
                                        String fcVersion)
                                 throws SemanticException

Throws:

SemanticException

makePartSpec

public static Map<String,String> makePartSpec(List<FieldSchema> partCols,
                                              List<String> partVals)

Return the partition specification from the specified keys and values

Parameters:

partCols - the names of the partition keys

partVals - the values of the partition keys

Returns:

the partition specification as a map

schemaCompare

public static boolean schemaCompare(List<FieldSchema> newSchema,
                                    List<FieldSchema> oldSchema)

Compares the schemas - names, types and order, but ignoring comments

Parameters:

newSchema - the new schema

oldSchema - the old schema

Returns:

a boolean indicating match