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CarbonCommonConstants.java
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CarbonCommonConstants.java
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/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.carbondata.core.constants;
import java.nio.charset.Charset;
import org.apache.carbondata.common.annotations.InterfaceStability;
import org.apache.carbondata.core.util.CarbonProperty;
public final class CarbonCommonConstants {
/**
* surrogate value of null
*/
public static final int DICT_VALUE_NULL = 1;
/**
* integer size in bytes
*/
public static final int INT_SIZE_IN_BYTE = 4;
/**
* short size in bytes
*/
public static final int SHORT_SIZE_IN_BYTE = 2;
/**
* DOUBLE size in bytes
*/
public static final int DOUBLE_SIZE_IN_BYTE = 8;
/**
* LONG size in bytes
*/
public static final int LONG_SIZE_IN_BYTE = 8;
/**
* byte to KB conversion factor
*/
public static final int BYTE_TO_KB_CONVERSION_FACTOR = 1024;
/**
* BYTE_ENCODING
*/
public static final String BYTE_ENCODING = "ISO-8859-1";
/**
* measure meta data file name
*/
public static final String MEASURE_METADATA_FILE_NAME = "/msrMetaData_";
/**
* set the segment ids to query from the table
*/
public static final String CARBON_INPUT_SEGMENTS = "carbon.input.segments.";
/**
* key prefix for set command. 'carbon.datamap.visible.dbName.tableName.dmName = false' means
* that the query on 'dbName.table' will not use the datamap 'dmName'
*/
@InterfaceStability.Unstable
public static final String CARBON_DATAMAP_VISIBLE = "carbon.datamap.visible.";
/**
* Fetch and validate the segments.
* Used for aggregate table load as segment validation is not required.
*/
public static final String VALIDATE_CARBON_INPUT_SEGMENTS = "validate.carbon.input.segments.";
/**
* Whether load/insert command is fired internally or by the user.
* Used to block load/insert on pre-aggregate if fired by user
*/
public static final String IS_INTERNAL_LOAD_CALL = "is.internal.load.call";
/**
* location of the carbon member, hierarchy and fact files
*/
@CarbonProperty
public static final String STORE_LOCATION = "carbon.storelocation";
/**
* blocklet size in carbon file
*/
@CarbonProperty
public static final String BLOCKLET_SIZE = "carbon.blocklet.size";
/**
* Number of cores to be used
*/
@CarbonProperty
public static final String NUM_CORES = "carbon.number.of.cores";
/**
* carbon sort size
*/
@CarbonProperty
public static final String SORT_SIZE = "carbon.sort.size";
/**
* CARDINALITY_INCREMENT_DEFAULT_VALUE
*/
public static final int CARDINALITY_INCREMENT_VALUE_DEFAULT_VAL = 10;
/**
* default blocklet size
*/
public static final String BLOCKLET_SIZE_DEFAULT_VAL = "120000";
/**
* min blocklet size
*/
public static final int BLOCKLET_SIZE_MIN_VAL = 2000;
/**
* max blocklet size
*/
public static final int BLOCKLET_SIZE_MAX_VAL = 12000000;
/**
* default block size in MB
*/
public static final String BLOCK_SIZE_DEFAULT_VAL = "1024";
/**
* min block size in MB
*/
public static final int BLOCK_SIZE_MIN_VAL = 1;
/**
* max block size in MB
*/
public static final int BLOCK_SIZE_MAX_VAL = 2048;
/**
* default value of number of cores to be used
*/
public static final String NUM_CORES_DEFAULT_VAL = "2";
/**
* min value of number of cores to be used
*/
public static final int NUM_CORES_MIN_VAL = 1;
/**
* max value of number of cores to be used
*/
public static final int NUM_CORES_MAX_VAL = 32;
/**
* default carbon sort size
*/
public static final String SORT_SIZE_DEFAULT_VAL = "100000";
/**
* min carbon sort size
*/
public static final int SORT_SIZE_MIN_VAL = 1000;
/**
* carbon properties file path
*/
public static final String CARBON_PROPERTIES_FILE_PATH = "../../../conf/carbon.properties";
/**
* CARBON_DDL_BASE_HDFS_URL
*/
@CarbonProperty
public static final String CARBON_DDL_BASE_HDFS_URL = "carbon.ddl.base.hdfs.url";
/**
* Load Folder Name
*/
public static final String LOAD_FOLDER = "Segment_";
public static final String HDFSURL_PREFIX = "hdfs://";
public static final String LOCAL_FILE_PREFIX = "file://";
public static final String VIEWFSURL_PREFIX = "viewfs://";
public static final String ALLUXIOURL_PREFIX = "alluxio://";
public static final String S3_PREFIX = "s3://";
public static final String S3N_PREFIX = "s3n://";
public static final String S3A_PREFIX = "s3a://";
/**
* Access Key for s3n
*/
public static final String S3N_ACCESS_KEY = "fs.s3n.awsAccessKeyId";
/**
* Secret Key for s3n
*/
public static final String S3N_SECRET_KEY = "fs.s3n.awsSecretAccessKey";
/**
* Access Key for s3
*/
public static final String S3_ACCESS_KEY = "fs.s3.awsAccessKeyId";
/**
* Secret Key for s3
*/
public static final String S3_SECRET_KEY = "fs.s3.awsSecretAccessKey";
/**
* FS_DEFAULT_FS
*/
@CarbonProperty
public static final String FS_DEFAULT_FS = "fs.defaultFS";
/**
* BYTEBUFFER_SIZE
*/
public static final int BYTEBUFFER_SIZE = 24 * 1024;
/**
* Average constant
*/
public static final String AVERAGE = "avg";
/**
* Count constant
*/
public static final String COUNT = "count";
/**
* SUM
*/
public static final String SUM = "sum";
/**
* DUMMY aggregation function
*/
public static final String DUMMY = "dummy";
/**
* MEMBER_DEFAULT_VAL
*/
public static final String MEMBER_DEFAULT_VAL = "@NU#LL$!";
/**
* default charset to be used for reading and writing
*/
public static final String DEFAULT_CHARSET = "UTF-8";
/**
* MEMBER_DEFAULT_VAL_ARRAY
*/
public static final byte[] MEMBER_DEFAULT_VAL_ARRAY =
MEMBER_DEFAULT_VAL.getBytes(Charset.forName(DEFAULT_CHARSET));
/**
* Bytes for string 0, it is used in codegen in case of null values.
*/
public static final byte[] ZERO_BYTE_ARRAY = "0".getBytes(Charset.forName(DEFAULT_CHARSET));
/**
* Empty byte array
*/
public static final byte[] EMPTY_BYTE_ARRAY = new byte[0];
/**
* FILE STATUS IN-PROGRESS
*/
public static final String FILE_INPROGRESS_STATUS = ".inprogress";
/**
* CARBON_BADRECORDS_LOCATION
*/
@CarbonProperty
public static final String CARBON_BADRECORDS_LOC = "carbon.badRecords.location";
/**
* CARBON_BADRECORDS_LOCATION_DEFAULT
*/
public static final String CARBON_BADRECORDS_LOC_DEFAULT_VAL = "";
/**
* HIERARCHY_FILE_EXTENSION
*/
public static final String HIERARCHY_FILE_EXTENSION = ".hierarchy";
/**
* SORT_TEMP_FILE_LOCATION
*/
public static final String SORT_TEMP_FILE_LOCATION = "sortrowtmp";
/**
* CARBON_RESULT_SIZE_DEFAULT
*/
public static final String LEVEL_FILE_EXTENSION = ".level";
/**
* FACT_FILE_EXT
*/
public static final String FACT_FILE_EXT = ".carbondata";
/**
* DELETE_DELTA_FILE_EXT
*/
public static final String DELETE_DELTA_FILE_EXT = ".deletedelta";
/**
* UPDATE_DELTA_FILE_EXT
*/
public static final String UPDATE_DELTA_FILE_EXT = FACT_FILE_EXT;
/**
* MEASUREMETADATA_FILE_EXT
*/
public static final String MEASUREMETADATA_FILE_EXT = ".msrmetadata";
/**
* Comment for <code>TYPE_MYSQL</code>
*/
public static final String TYPE_MYSQL = "MYSQL";
/**
* Comment for <code>TYPE_MSSQL</code>
*/
public static final String TYPE_MSSQL = "MSSQL";
/**
* Comment for <code>TYPE_ORACLE</code>
*/
public static final String TYPE_ORACLE = "ORACLE";
/**
* Comment for <code>TYPE_SYBASE</code>
*/
public static final String TYPE_SYBASE = "SYBASE";
/**
* SORT_INTERMEDIATE_FILES_LIMIT
*/
@CarbonProperty
public static final String SORT_INTERMEDIATE_FILES_LIMIT = "carbon.sort.intermediate.files.limit";
/**
* SORT_INTERMEDIATE_FILES_LIMIT_DEFAULT_VALUE
*/
public static final String SORT_INTERMEDIATE_FILES_LIMIT_DEFAULT_VALUE = "20";
public static final int SORT_INTERMEDIATE_FILES_LIMIT_MIN = 2;
public static final int SORT_INTERMEDIATE_FILES_LIMIT_MAX = 50;
/**
* BAD_RECORD_KEY_VALUE
*/
public static final String BAD_RECORD_KEY = "BADRECORD";
/**
* MERGERD_EXTENSION
*/
public static final String MERGERD_EXTENSION = ".merge";
/**
* SORT_FILE_BUFFER_SIZE
*/
@CarbonProperty
public static final String SORT_FILE_BUFFER_SIZE = "carbon.sort.file.buffer.size";
/**
* SORT_FILE_WRITE_BUFFER_SIZE
*/
@CarbonProperty
public static final String CARBON_SORT_FILE_WRITE_BUFFER_SIZE =
"carbon.sort.file.write.buffer.size";
public static final int CARBON_SORT_FILE_WRITE_BUFFER_SIZE_MIN = 10240;
public static final int CARBON_SORT_FILE_WRITE_BUFFER_SIZE_MAX = 10485760;
/**
* SORT_FILE_WRITE_BUFFER_SIZE_DEFAULT_VALUE
*/
public static final String CARBON_SORT_FILE_WRITE_BUFFER_SIZE_DEFAULT_VALUE = "16384";
/**
* Number of cores to be used while loading
*/
@CarbonProperty
public static final String NUM_CORES_LOADING = "carbon.number.of.cores.while.loading";
/**
* Number of cores to be used while compacting
*/
@CarbonProperty
public static final String NUM_CORES_COMPACTING = "carbon.number.of.cores.while.compacting";
/**
* Number of cores to be used while alter partition
*/
public static final String NUM_CORES_ALT_PARTITION = "carbon.number.of.cores.while.altPartition";
/**
* Number of cores to be used for block sort
*/
@CarbonProperty
public static final String NUM_CORES_BLOCK_SORT = "carbon.number.of.cores.block.sort";
/**
* Default value of number of cores to be used for block sort
*/
public static final String NUM_CORES_BLOCK_SORT_DEFAULT_VAL = "7";
/**
* Max value of number of cores to be used for block sort
*/
public static final int NUM_CORES_BLOCK_SORT_MAX_VAL = 12;
/**
* Min value of number of cores to be used for block sort
*/
public static final int NUM_CORES_BLOCK_SORT_MIN_VAL = 1;
/**
* CSV_READ_BUFFER_SIZE
*/
@CarbonProperty
public static final String CSV_READ_BUFFER_SIZE = "carbon.csv.read.buffersize.byte";
/**
* CSV_READ_BUFFER_SIZE
*/
public static final String CSV_READ_BUFFER_SIZE_DEFAULT = "50000";
/**
* min value for csv read buffer size
*/
public static final int CSV_READ_BUFFER_SIZE_MIN = 10240; //10 kb
/**
* max value for csv read buffer size
*/
public static final int CSV_READ_BUFFER_SIZE_MAX = 10485760; // 10 mb
/**
* CSV_READ_COPIES
*/
public static final String DEFAULT_NUMBER_CORES = "2";
/**
* CSV_FILE_EXTENSION
*/
public static final String CSV_FILE_EXTENSION = ".csv";
/**
* LOG_FILE_EXTENSION
*/
public static final String LOG_FILE_EXTENSION = ".log";
/**
* COLON_SPC_CHARACTER
*/
public static final String COLON_SPC_CHARACTER = ":!@#COLON#@!:";
/**
* HASH_SPC_CHARATER
*/
public static final String HASH_SPC_CHARACTER = "#!@:HASH:@!#";
/**
* SEMICOLON_SPC_CHARATER
*/
public static final String SEMICOLON_SPC_CHARACTER = ";#!@:SEMIC:@!#;";
/**
* AMPERSAND_SPC_CHARATER
*/
public static final String AMPERSAND_SPC_CHARACTER = "&#!@:AMPER:@!#&";
/**
* ATTHERATE_SPC_CHARATER
*/
public static final String COMA_SPC_CHARACTER = ",#!:COMA:!#,";
/**
* HYPHEN_SPC_CHARACTER
*/
public static final String HYPHEN_SPC_CHARACTER = "-#!:HYPHEN:!#-";
/**
* SORT_TEMP_FILE_EXT
*/
public static final String SORT_TEMP_FILE_EXT = ".sorttemp";
/**
* CARBON_MERGE_SORT_READER_THREAD
*/
@CarbonProperty
public static final String CARBON_MERGE_SORT_READER_THREAD = "carbon.merge.sort.reader.thread";
/**
* CARBON_MERGE_SORT_READER_THREAD_DEFAULTVALUE
*/
public static final String CARBON_MERGE_SORT_READER_THREAD_DEFAULTVALUE = "3";
/**
* DEFAULT_COLLECTION_SIZE
*/
public static final int DEFAULT_COLLECTION_SIZE = 16;
/**
* CARBON_TIMESTAMP_DEFAULT_FORMAT
*/
public static final String CARBON_TIMESTAMP_DEFAULT_FORMAT = "yyyy-MM-dd HH:mm:ss";
/**
* Property for specifying the format of TIMESTAMP data type column.
* e.g. yyyy/MM/dd HH:mm:ss, or using CARBON_TIMESTAMP_DEFAULT_FORMAT
*/
@CarbonProperty
public static final String CARBON_TIMESTAMP_FORMAT = "carbon.timestamp.format";
/**
* CARBON_DATE_DEFAULT_FORMAT
*/
public static final String CARBON_DATE_DEFAULT_FORMAT = "yyyy-MM-dd";
/**
* Property for specifying the format of DATE data type column.
* e.g. yyyy/MM/dd , or using CARBON_DATE_DEFAULT_FORMAT
*/
@CarbonProperty
public static final String CARBON_DATE_FORMAT = "carbon.date.format";
/**
* STORE_LOCATION_HDFS
*/
@CarbonProperty
public static final String STORE_LOCATION_HDFS = "carbon.storelocation.hdfs";
/**
* IS_COLUMNAR_STORAGE_DEFAULTVALUE
*/
public static final String IS_COLUMNAR_STORAGE_DEFAULTVALUE = "true";
/**
* DIMENSION_SPLIT_VALUE_IN_COLUMNAR_DEFAULTVALUE
*/
public static final String DIMENSION_SPLIT_VALUE_IN_COLUMNAR_DEFAULTVALUE = "1";
/**
* IS_FULLY_FILLED_BITS_DEFAULT_VALUE
*/
public static final String IS_FULLY_FILLED_BITS_DEFAULT_VALUE = "true";
/**
* IS_INT_BASED_INDEXER
*/
@CarbonProperty
public static final String AGGREAGATE_COLUMNAR_KEY_BLOCK = "aggregate.columnar.keyblock";
/**
* IS_INT_BASED_INDEXER_DEFAULTVALUE
*/
public static final String AGGREAGATE_COLUMNAR_KEY_BLOCK_DEFAULTVALUE = "true";
/**
* ENABLE_QUERY_STATISTICS
*/
@CarbonProperty
public static final String ENABLE_QUERY_STATISTICS = "enable.query.statistics";
/**
* ENABLE_QUERY_STATISTICS_DEFAULT
*/
public static final String ENABLE_QUERY_STATISTICS_DEFAULT = "false";
/**
* TIME_STAT_UTIL_TYPE
*/
@CarbonProperty
public static final String ENABLE_DATA_LOADING_STATISTICS = "enable.data.loading.statistics";
/**
* TIME_STAT_UTIL_TYPE_DEFAULT
*/
public static final String ENABLE_DATA_LOADING_STATISTICS_DEFAULT = "false";
/**
* CONSTANT_SIZE_TEN
*/
public static final int CONSTANT_SIZE_TEN = 10;
/**
* LEVEL_METADATA_FILE
*/
public static final String LEVEL_METADATA_FILE = "levelmetadata_";
/**
* COMMA
*/
public static final String COMMA = ",";
/**
* UNDERSCORE
*/
public static final String UNDERSCORE = "_";
/**
* DASH
*/
public static final String DASH = "-";
/**
* POINT
*/
public static final String POINT = ".";
/**
* Windows File separator
*/
public static final String WINDOWS_FILE_SEPARATOR = "\\";
/**
* File separator
*/
public static final String FILE_SEPARATOR = "/";
/**
* MAX_QUERY_EXECUTION_TIME
*/
@CarbonProperty
public static final String MAX_QUERY_EXECUTION_TIME = "max.query.execution.time";
/**
* CARBON_TIMESTAMP
*/
public static final String CARBON_TIMESTAMP = "dd-MM-yyyy HH:mm:ss";
/**
* CARBON_TIMESTAMP
*/
public static final String CARBON_TIMESTAMP_MILLIS = "dd-MM-yyyy HH:mm:ss:SSS";
/**
* NUMBER_OF_TRIES_FOR_LOAD_METADATA_LOCK.
*
* Because we want concurrent loads to be completed even if they have to wait for the lock
* therefore taking the default as 100.
*
* Example: Concurrent loads will use this to wait to acquire the table status lock.
*/
public static final int NUMBER_OF_TRIES_FOR_CONCURRENT_LOCK_DEFAULT = 100;
/**
* MAX_TIMEOUT_FOR_LOAD_METADATA_LOCK
*
* * Example: Concurrent loads will use this to wait to acquire the table status lock.
*/
public static final int MAX_TIMEOUT_FOR_CONCURRENT_LOCK_DEFAULT = 1;
/**
* NUMBER_OF_TRIES_FOR_LOAD_METADATA_LOCK
*/
@CarbonProperty
public static final String NUMBER_OF_TRIES_FOR_CONCURRENT_LOCK =
"carbon.concurrent.lock.retries";
/**
* MAX_TIMEOUT_FOR_LOAD_METADATA_LOCK
*/
@CarbonProperty
public static final String MAX_TIMEOUT_FOR_CONCURRENT_LOCK =
"carbon.concurrent.lock.retry.timeout.sec";
/**
* NUMBER_OF_TRIES_FOR_CARBON_LOCK
*/
public static final int NUMBER_OF_TRIES_FOR_CARBON_LOCK_DEFAULT = 3;
/**
* MAX_TIMEOUT_FOR_CARBON_LOCK
*/
public static final int MAX_TIMEOUT_FOR_CARBON_LOCK_DEFAULT = 5;
/**
* NUMBER_OF_TRIES_FOR_CARBON_LOCK
*/
@CarbonProperty
public static final String NUMBER_OF_TRIES_FOR_CARBON_LOCK =
"carbon.lock.retries";
/**
* MAX_TIMEOUT_FOR_CARBON_LOCK
*/
@CarbonProperty
public static final String MAX_TIMEOUT_FOR_CARBON_LOCK =
"carbon.lock.retry.timeout.sec";
/**
* compressor for writing/reading carbondata file
*/
@CarbonProperty
public static final String COMPRESSOR = "carbon.column.compressor";
/**
* default compressor is snappy
*/
public static final String DEFAULT_COMPRESSOR = "snappy";
public static final String STRING_TYPE = "StringType";
public static final String INTEGER_TYPE = "IntegerType";
public static final String LONG_TYPE = "LongType";
public static final String DOUBLE_TYPE = "DoubleType";
public static final String FLOAT_TYPE = "FloatType";
public static final String DATE_TYPE = "DateType";
public static final String BOOLEAN_TYPE = "BooleanType";
public static final String TIMESTAMP_TYPE = "TimestampType";
public static final String BYTE_TYPE = "ByteType";
public static final String SHORT_TYPE = "ShortType";
public static final String DECIMAL_TYPE = "DecimalType";
public static final String STRING = "String";
public static final String INTEGER = "Integer";
public static final String SHORT = "Short";
public static final String NUMERIC = "Numeric";
public static final String TIMESTAMP = "Timestamp";
public static final String ARRAY = "array";
public static final String STRUCT = "struct";
public static final String FROM = "from";
/**
* FACT_UPDATE_EXTENSION.
*/
public static final String FACT_UPDATE_EXTENSION = ".carbondata_update";
public static final String FACT_DELETE_EXTENSION = "_delete";
/**
* MARKED_FOR_UPDATION
*/
public static final String FACT_FILE_UPDATED = "update";
/**
* MAX_QUERY_EXECUTION_TIME
*/
public static final int DEFAULT_MAX_QUERY_EXECUTION_TIME = 60;
/**
* TABLE UPDATE STATUS FILENAME
*/
public static final String TABLEUPDATESTATUS_FILENAME = "tableupdatestatus";
/**
* The batch size of records which returns to client.
*/
@CarbonProperty
public static final String DETAIL_QUERY_BATCH_SIZE = "carbon.detail.batch.size";
public static final int DETAIL_QUERY_BATCH_SIZE_DEFAULT = 100;
/**
* SPILL_OVER_DISK_PATH
*/
public static final String SCHEMAS_MODIFIED_TIME_FILE = "modifiedTime.mdt";
public static final String DEFAULT_INVISIBLE_DUMMY_MEASURE = "default_dummy_measure";
public static final String CARBON_IMPLICIT_COLUMN_POSITIONID = "positionId";
public static final String CARBON_IMPLICIT_COLUMN_TUPLEID = "tupleId";
public static final String CARBON_IMPLICIT_COLUMN_SEGMENTID = "segId";
/**
* max driver lru cache size upto which lru cache will be loaded in memory
*/
@CarbonProperty
public static final String CARBON_MAX_DRIVER_LRU_CACHE_SIZE = "carbon.max.driver.lru.cache.size";
public static final String POSITION_REFERENCE = "positionReference";
/**
* implicit column which will be added to each carbon table
*/
public static final String POSITION_ID = "positionId";
/**
* max executor lru cache size upto which lru cache will be loaded in memory
*/
@CarbonProperty
public static final String CARBON_MAX_EXECUTOR_LRU_CACHE_SIZE =
"carbon.max.executor.lru.cache.size";
/**
* max lru cache size default value in MB
*/
public static final String CARBON_MAX_LRU_CACHE_SIZE_DEFAULT = "-1";
/**
* CARBON_PREFETCH_BUFFERSIZE
*/
@CarbonProperty
public static final String CARBON_PREFETCH_BUFFERSIZE = "carbon.prefetch.buffersize";
/**
* CARBON_PREFETCH_BUFFERSIZE DEFAULT VALUE
*/
public static final String CARBON_PREFETCH_BUFFERSIZE_DEFAULT = "1000";
/**
* CARBON_PREFETCH_IN_MERGE
*/
public static final boolean CARBON_PREFETCH_IN_MERGE_VALUE = false;
/**
* TEMPWRITEFILEEXTENSION
*/
public static final String TEMPWRITEFILEEXTENSION = ".write";
/**
* ENABLE_AUTO_LOAD_MERGE
*/
@CarbonProperty
public static final String ENABLE_AUTO_LOAD_MERGE = "carbon.enable.auto.load.merge";
/**
* DEFAULT_ENABLE_AUTO_LOAD_MERGE
*/
public static final String DEFAULT_ENABLE_AUTO_LOAD_MERGE = "false";
/**
* ZOOKEEPER_ENABLE_LOCK if this is set to true then zookeeper will be used to handle locking
* mechanism of carbon
*/
@CarbonProperty
public static final String LOCK_TYPE = "carbon.lock.type";
/**
* ZOOKEEPER_ENABLE_DEFAULT the default value for zookeeper will be true for carbon
*/
public static final String LOCK_TYPE_DEFAULT = "LOCALLOCK";
/**
* ZOOKEEPER_LOCATION this is the location in zookeeper file system where locks are created.
* mechanism of carbon
*/
public static final String ZOOKEEPER_LOCATION = "/CarbonLocks";
/**
* maximum dictionary chunk size that can be kept in memory while writing dictionary file
*/
@CarbonProperty
public static final String DICTIONARY_ONE_CHUNK_SIZE = "carbon.dictionary.chunk.size";
/**
* Dictionary Server Worker Threads
*/
@CarbonProperty
public static final String DICTIONARY_WORKER_THREADS = "dictionary.worker.threads";
/**
* Dictionary Server Worker Threads
*/
public static final String DICTIONARY_WORKER_THREADS_DEFAULT = "1";
/**
* dictionary chunk default size
*/
public static final String DICTIONARY_ONE_CHUNK_SIZE_DEFAULT = "10000";
/**
* xxhash algorithm property for hashmap
*/
@CarbonProperty
public static final String ENABLE_XXHASH = "carbon.enableXXHash";
/**
* xxhash algorithm property for hashmap. Default value false
*/
public static final String ENABLE_XXHASH_DEFAULT = "true";
/**
* default charset class to be used for reading and writing
*/
public static final Charset DEFAULT_CHARSET_CLASS = Charset.forName(DEFAULT_CHARSET);
/**
* surrogate key that will be sent whenever in the dictionary chunks
* a valid surrogate key is not found for a given dictionary value
*/
public static final int INVALID_SURROGATE_KEY = -1;
/**
* surrogate key for MEMBER_DEFAULT_VAL
*/
public static final int MEMBER_DEFAULT_VAL_SURROGATE_KEY = 1;
public static final String INVALID_SEGMENT_ID = "-1";
/**
* default load time of the segment
*/
public static final long SEGMENT_LOAD_TIME_DEFAULT = -1;
/**
* Size of Major Compaction in MBs
*/
@CarbonProperty
public static final String CARBON_MAJOR_COMPACTION_SIZE = "carbon.major.compaction.size";
/**
* By default size of major compaction in MBs.
*/
public static final String DEFAULT_CARBON_MAJOR_COMPACTION_SIZE = "1024";
/**
* This property is used to tell how many segments to be preserved from merging.
*/
@CarbonProperty
public static final java.lang.String PRESERVE_LATEST_SEGMENTS_NUMBER =
"carbon.numberof.preserve.segments";
/**
* If preserve property is enabled then 2 segments will be preserved.
*/
public static final String DEFAULT_PRESERVE_LATEST_SEGMENTS_NUMBER = "0";
/**
* This property will determine the loads of how many days can be compacted.
*/
@CarbonProperty
public static final java.lang.String DAYS_ALLOWED_TO_COMPACT = "carbon.allowed.compaction.days";
/**
* Default value of 1 day loads can be compacted
*/
public static final String DEFAULT_DAYS_ALLOWED_TO_COMPACT = "0";
/**
* space reserved for writing block meta data in carbon data file
*/
@CarbonProperty
public static final String CARBON_BLOCK_META_RESERVED_SPACE =
"carbon.block.meta.size.reserved.percentage";
/**
* default value for space reserved for writing block meta data in carbon data file
*/
public static final String CARBON_BLOCK_META_RESERVED_SPACE_DEFAULT = "10";
/**
* property to enable min max during filter query
*/
@CarbonProperty
public static final String CARBON_QUERY_MIN_MAX_ENABLED = "carbon.enableMinMax";
/**
* default value to enable min or max during filter query execution
*/
public static final String MIN_MAX_DEFAULT_VALUE = "true";
/**
* this variable is to enable/disable prefetch of data during merge sort while
* reading data from sort temp files
*/
@CarbonProperty
public static final String CARBON_MERGE_SORT_PREFETCH = "carbon.merge.sort.prefetch";
public static final String CARBON_MERGE_SORT_PREFETCH_DEFAULT = "true";
/**
* If we are executing insert into query from source table using select statement
* & loading the same source table concurrently, when select happens on source table
* during the data load , it gets new record for which dictionary is not generated,
* So there will be inconsistency. To avoid this condition we can persist the dataframe
* into MEMORY_AND_DISK and perform insert into operation. By default this value
* will be false because no need to persist the dataframe in all cases. If user want
* to run load and insert queries on source table concurrently then user can enable this flag
*/
@CarbonProperty
public static final String CARBON_INSERT_PERSIST_ENABLED = "carbon.insert.persist.enable";
/**
* by default rdd will not be persisted in the insert case.
*/
public static final String CARBON_INSERT_PERSIST_ENABLED_DEFAULT = "false";
/**
* default name of data base
*/
public static final String DATABASE_DEFAULT_NAME = "default";
// tblproperties
public static final String COLUMN_GROUPS = "column_groups";
public static final String DICTIONARY_EXCLUDE = "dictionary_exclude";
public static final String DICTIONARY_INCLUDE = "dictionary_include";
/**
* key for dictionary path
*/
public static final String DICTIONARY_PATH = "dictionary_path";
public static final String SORT_COLUMNS = "sort_columns";
public static final String PARTITION_TYPE = "partition_type";
public static final String NUM_PARTITIONS = "num_partitions";
public static final String RANGE_INFO = "range_info";
public static final String LIST_INFO = "list_info";
public static final String COLUMN_PROPERTIES = "columnproperties";
// table block size in MB
public static final String TABLE_BLOCKSIZE = "table_blocksize";
// set in column level to disable inverted index
public static final String NO_INVERTED_INDEX = "no_inverted_index";
// table property name of major compaction size
public static final String TABLE_MAJOR_COMPACTION_SIZE = "major_compaction_size";
// table property name of auto load merge
public static final String TABLE_AUTO_LOAD_MERGE = "auto_load_merge";
// table property name of compaction level threshold
public static final String TABLE_COMPACTION_LEVEL_THRESHOLD = "compaction_level_threshold";
// table property name of preserve segments numbers while compaction
public static final String TABLE_COMPACTION_PRESERVE_SEGMENTS = "compaction_preserve_segments";
// table property name of allowed compaction days while compaction
public static final String TABLE_ALLOWED_COMPACTION_DAYS = "allowed_compaction_days";
/**
* 16 mb size
*/
public static final long CARBON_16MB = 16 * 1024 * 1024;
/**
* 256 mb size
*/
public static final long CARBON_256MB = 256 * 1024 * 1024;
/**
* ZOOKEEPERLOCK TYPE
*/
public static final String CARBON_LOCK_TYPE_ZOOKEEPER = "ZOOKEEPERLOCK";
/**
* LOCALLOCK TYPE
*/
public static final String CARBON_LOCK_TYPE_LOCAL = "LOCALLOCK";
/**
* HDFSLOCK TYPE
*/
public static final String CARBON_LOCK_TYPE_HDFS = "HDFSLOCK";
/**
* S3LOCK TYPE
*/
public static final String CARBON_LOCK_TYPE_S3 = "S3LOCK";
/**
* Invalid filter member log string
*/
public static final String FILTER_INVALID_MEMBER =
" Invalid Record(s) are present while filter evaluation. ";
/**
* Number of unmerged segments to be merged.
*/
@CarbonProperty
public static final String COMPACTION_SEGMENT_LEVEL_THRESHOLD =
"carbon.compaction.level.threshold";
/**
* Default count for Number of segments to be merged in levels is 4,3
*/
public static final String DEFAULT_SEGMENT_LEVEL_THRESHOLD = "4,3";
/**
* Number of Update Delta files which is the Threshold for IUD compaction.
* Only accepted Range is 0 - 10000. Outside this range system will pick default value.
*/
@CarbonProperty
public static final String UPDATE_DELTAFILE_COUNT_THRESHOLD_IUD_COMPACTION =
"carbon.horizontal.update.compaction.threshold";
/**
* Default count of segments which act as a threshold for IUD compaction merge.
*/
public static final String DEFAULT_UPDATE_DELTAFILE_COUNT_THRESHOLD_IUD_COMPACTION = "1";
/**
* Number of Delete Delta files which is the Threshold for IUD compaction.
* Only accepted Range is 0 - 10000. Outside this range system will pick default value.
*/
@CarbonProperty
public static final String DELETE_DELTAFILE_COUNT_THRESHOLD_IUD_COMPACTION =
"carbon.horizontal.delete.compaction.threshold";
/**
* Default count of segments which act as a threshold for IUD compaction merge.
*/
public static final String DEFAULT_DELETE_DELTAFILE_COUNT_THRESHOLD_IUD_COMPACTION = "1";
/**
* default location of the carbon metastore db
*/
public static final String METASTORE_LOCATION_DEFAULT_VAL = "../carbon.metastore";
/**
* hive connection url
*/
@CarbonProperty
public static final String HIVE_CONNECTION_URL = "javax.jdo.option.ConnectionURL";
/**
* If the level 2 compaction is done in minor then new compacted segment will end with .2
*/
public static final String LEVEL2_COMPACTION_INDEX = ".2";
/**
* Indicates compaction
*/