org.apache.carbondata.datamap.bloom

Class BloomIndexFileStore

java.lang.Object

org.apache.carbondata.datamap.bloom.BloomIndexFileStore

@InterfaceAudience.Internal
public class BloomIndexFileStore
extends Object

This class works for merging and loading bloom index

Field Summary

Fields

Modifier and Type	Field and Description
static String	BLOOM_INDEX_SUFFIX
static String	MERGE_BLOOM_INDEX_SHARD_NAME
static String	MERGE_BLOOM_INDEX_SUFFIX
static String	MERGE_INPROGRESS_FILE flag file for merging if flag file exists, query won't use mergeShard if flag file not exists and mergeShard generated, query will use mergeShard

Constructor Summary

Constructors

Constructor and Description
BloomIndexFileStore()

Method Summary

Modifier and Type	Method and Description
static String	getBloomIndexFile(String shardPath, String colName) get bloom index file
static String	getMergeBloomIndexFile(String mergeShardPath, String colName) get merge bloom index file
static List<CarbonBloomFilter>	loadBloomFilterFromFile(String shardPath, String colName) load bloom filter from bloom index file
static List<CarbonBloomFilter>	loadBloomIndex(String shardPath, String colName) load bloom filter of colName from shardPath
static List<CarbonBloomFilter>	loadMergeBloomIndex(String mergeShardPath, String colName) load bloom filter of colName from mergeShardPath
static void	mergeBloomIndexFile(String dmSegmentPathString, List<String> indexCols)

Methods inherited from class java.lang.Object

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

Field Detail

BLOOM_INDEX_SUFFIX

public static final String BLOOM_INDEX_SUFFIX

See Also:

Constant Field Values

MERGE_BLOOM_INDEX_SUFFIX

public static final String MERGE_BLOOM_INDEX_SUFFIX

See Also:

Constant Field Values

MERGE_BLOOM_INDEX_SHARD_NAME

public static final String MERGE_BLOOM_INDEX_SHARD_NAME

See Also:

Constant Field Values

MERGE_INPROGRESS_FILE

public static final String MERGE_INPROGRESS_FILE

flag file for merging if flag file exists, query won't use mergeShard if flag file not exists and mergeShard generated, query will use mergeShard

See Also:

Constant Field Values

Constructor Detail

BloomIndexFileStore

public BloomIndexFileStore()

Method Detail

mergeBloomIndexFile

public static void mergeBloomIndexFile(String dmSegmentPathString,
                                       List<String> indexCols)

loadBloomFilterFromFile

public static List<CarbonBloomFilter> loadBloomFilterFromFile(String shardPath,
                                                              String colName)

load bloom filter from bloom index file

loadBloomIndex

public static List<CarbonBloomFilter> loadBloomIndex(String shardPath,
                                                     String colName)

load bloom filter of colName from shardPath

loadMergeBloomIndex

public static List<CarbonBloomFilter> loadMergeBloomIndex(String mergeShardPath,
                                                          String colName)

load bloom filter of colName from mergeShardPath

getBloomIndexFile

public static String getBloomIndexFile(String shardPath,
                                       String colName)

get bloom index file

getMergeBloomIndexFile

public static String getMergeBloomIndexFile(String mergeShardPath,
                                            String colName)

get merge bloom index file