/
CarbonCommonConstants.java
2057 lines (1657 loc) · 62.3 KB
/
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.annotations.CarbonProperty;
public final class CarbonCommonConstants {
private CarbonCommonConstants() {
}
//////////////////////////////////////////////////////////////////////////////////////////
// System level property start here
//////////////////////////////////////////////////////////////////////////////////////////
// System level property is the global property for CarbonData
// application, these properties are stored in a singleton instance
// so that all processing logic in CarbonData uses the same
// property value
/**
* 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";
/**
* 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;
/**
* 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;
/**
* carbon properties file path
*/
@CarbonProperty
public static final String CARBON_PROPERTIES_FILE_PATH = "carbon.properties.filepath";
/**
* default carbon properties file path
*/
public static final String CARBON_PROPERTIES_FILE_PATH_DEFAULT =
"../../../conf/carbon.properties";
/**
* CARBON_DDL_BASE_HDFS_URL
*/
@CarbonProperty
public static final String CARBON_DDL_BASE_HDFS_URL = "carbon.ddl.base.hdfs.url";
/**
* 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 = "";
/**
* Property for specifying the format of TIMESTAMP data type column.
* e.g. yyyy/MM/dd HH:mm:ss, or using default value
*/
@CarbonProperty
public static final String CARBON_TIMESTAMP_FORMAT = "carbon.timestamp.format";
/**
* default value
*/
public static final String CARBON_TIMESTAMP_DEFAULT_FORMAT = "yyyy-MM-dd HH:mm:ss";
/**
* 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";
/**
* Property for specifying the format of DATE data type column.
* e.g. yyyy/MM/dd , or using default value
*/
@CarbonProperty
public static final String CARBON_DATE_FORMAT = "carbon.date.format";
/**
* default value
*/
public static final String CARBON_DATE_DEFAULT_FORMAT = "yyyy-MM-dd";
/**
* 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";
/**
* 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";
/**
* Specifies the path where the lock files have to be created.
* By default, lock files are created in table path.
*/
@CarbonProperty
public static final String LOCK_PATH = "carbon.lock.path";
public static final String LOCK_PATH_DEFAULT = "";
/**
* ZOOKEEPER_LOCATION this is the location in zookeeper file system where locks are created.
* mechanism of carbon
*/
public static final String ZOOKEEPER_LOCATION = "/CarbonLocks";
/**
* 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";
/**
* System property to enable or disable local dictionary generation
*/
@CarbonProperty
public static final String LOCAL_DICTIONARY_SYSTEM_ENABLE = "carbon.local.dictionary.enable";
/**
* System property to enable or disable decoder based local dictionary fallback
*/
@CarbonProperty
public static final String LOCAL_DICTIONARY_DECODER_BASED_FALLBACK =
"carbon.local.dictionary.decoder.fallback";
/**
* System property to enable or disable decoder based local dictionary fallback default value
*/
public static final String LOCAL_DICTIONARY_DECODER_BASED_FALLBACK_DEFAULT = "true";
/**
* zookeeper url key
*/
@CarbonProperty
public static final String ZOOKEEPER_URL = "spark.deploy.zookeeper.url";
/**
* carbon data file version property
*/
@CarbonProperty
public static final String CARBON_DATA_FILE_VERSION = "carbon.data.file.version";
@CarbonProperty
public static final String SPARK_SCHEMA_STRING_LENGTH_THRESHOLD =
"spark.sql.sources.schemaStringLengthThreshold";
public static final int SPARK_SCHEMA_STRING_LENGTH_THRESHOLD_DEFAULT = 4000;
@CarbonProperty
public static final String CARBON_BAD_RECORDS_ACTION = "carbon.bad.records.action";
/**
* FAIL action will fail the load in case of bad records in loading data
*/
public static final String CARBON_BAD_RECORDS_ACTION_DEFAULT = "FAIL";
@CarbonProperty
public static final String ENABLE_HIVE_SCHEMA_META_STORE = "spark.carbon.hive.schema.store";
public static final String ENABLE_HIVE_SCHEMA_META_STORE_DEFAULT = "false";
/**
* There is more often that in production uses different drivers for load and queries. So in case
* of load driver user should set this property to enable loader specific clean up.
*/
@CarbonProperty
public static final String DATA_MANAGEMENT_DRIVER = "spark.carbon.datamanagement.driver";
public static final String DATA_MANAGEMENT_DRIVER_DEFAULT = "true";
@CarbonProperty
public static final String CARBON_SESSIONSTATE_CLASSNAME = "spark.carbon.sessionstate.classname";
/**
* This property will be used to configure the sqlastbuilder class.
*/
@CarbonProperty
public static final String CARBON_SQLASTBUILDER_CLASSNAME =
"spark.carbon.sqlastbuilder.classname";
public static final String CARBON_SQLASTBUILDER_CLASSNAME_DEFAULT =
"org.apache.spark.sql.hive.CarbonSqlAstBuilder";
@CarbonProperty
public static final String CARBON_LEASE_RECOVERY_RETRY_COUNT =
"carbon.lease.recovery.retry.count";
public static final String CARBON_LEASE_RECOVERY_RETRY_COUNT_DEFAULT = "5";
public static final int CARBON_LEASE_RECOVERY_RETRY_COUNT_MIN = 1;
public static final int CARBON_LEASE_RECOVERY_RETRY_COUNT_MAX = 50;
@CarbonProperty
public static final String CARBON_LEASE_RECOVERY_RETRY_INTERVAL =
"carbon.lease.recovery.retry.interval";
public static final String CARBON_LEASE_RECOVERY_RETRY_INTERVAL_DEFAULT = "1000";
public static final int CARBON_LEASE_RECOVERY_RETRY_INTERVAL_MIN = 1000;
public static final int CARBON_LEASE_RECOVERY_RETRY_INTERVAL_MAX = 10000;
@CarbonProperty
public static final String CARBON_SECURE_DICTIONARY_SERVER =
"carbon.secure.dictionary.server";
public static final String CARBON_SECURE_DICTIONARY_SERVER_DEFAULT = "true";
/**
* ENABLE_CALCULATE_DATA_INDEX_SIZE
*/
@CarbonProperty
public static final String ENABLE_CALCULATE_SIZE = "carbon.enable.calculate.size";
/**
* default value of ENABLE_CALCULATE_DATA_INDEX_SIZE
*/
public static final String DEFAULT_ENABLE_CALCULATE_SIZE = "true";
/**
* this will be used to skip / ignore empty lines while loading
*/
@CarbonProperty
public static final String CARBON_SKIP_EMPTY_LINE = "carbon.skip.empty.line";
public static final String CARBON_SKIP_EMPTY_LINE_DEFAULT = "false";
/**
* Currently the segment lock files are not deleted immediately when unlock,
* this value indicates the number of hours the segment lock files will be preserved.
*/
@CarbonProperty
public static final String CARBON_SEGMENT_LOCK_FILES_PRESERVE_HOURS =
"carbon.segment.lock.files.preserve.hours";
/**
* default value is 2 days
*/
public static final String CARBON_SEGMENT_LOCK_FILES_PRESERVE_HOURS_DEFAULT = "48";
/**
* The number of invisible segment info which will be preserved in tablestatus file,
* if it exceeds this value, they will be removed and write to tablestatus.history file.
*/
@CarbonProperty
public static final String CARBON_INVISIBLE_SEGMENTS_PRESERVE_COUNT =
"carbon.invisible.segments.preserve.count";
/**
* default value is 200, it means that it will preserve 200 invisible segment info
* in tablestatus file.
* The size of one segment info is about 500 bytes, so the size of tablestatus file
* will remain at 100KB.
*/
public static final String CARBON_INVISIBLE_SEGMENTS_PRESERVE_COUNT_DEFAULT = "200";
/**
* System older location to store system level data like datamap schema and status files.
*/
@CarbonProperty
public static final String CARBON_SYSTEM_FOLDER_LOCATION = "carbon.system.folder.location";
/**
* It is internal configuration and used only for test purpose.
* It will merge the carbon index files with in the segment to single segment.
*/
@CarbonProperty
public static final String CARBON_MERGE_INDEX_IN_SEGMENT =
"carbon.merge.index.in.segment";
public static final String CARBON_MERGE_INDEX_IN_SEGMENT_DEFAULT = "true";
/**
* property to be used for specifying the max byte limit for string/varchar data type till
* where storing min/max in data file will be considered
*/
@CarbonProperty
public static final String CARBON_MINMAX_ALLOWED_BYTE_COUNT =
"carbon.minmax.allowed.byte.count";
public static final String CARBON_MINMAX_ALLOWED_BYTE_COUNT_DEFAULT = "200";
//////////////////////////////////////////////////////////////////////////////////////////
// Table level property start here
//////////////////////////////////////////////////////////////////////////////////////////
// Table level property is the table property for Carbon table
// Flat folder support on table. when it is true all CarbonData files store directly under table
// path instead of sub folders.
public static final String FLAT_FOLDER = "flat_folder";
/**
* FLAT_FOLDER default value
*/
public static final String DEFAULT_FLAT_FOLDER = "false";
public static final String DICTIONARY_EXCLUDE = "dictionary_exclude";
public static final String DICTIONARY_INCLUDE = "dictionary_include";
public static final String LONG_STRING_COLUMNS = "long_string_columns";
/**
* Table property to enable or disable local dictionary generation
*/
public static final String LOCAL_DICTIONARY_ENABLE = "local_dictionary_enable";
/**
* default value for local dictionary generation
*/
public static final String LOCAL_DICTIONARY_ENABLE_DEFAULT = "true";
/**
* Threshold value for local dictionary
*/
public static final String LOCAL_DICTIONARY_THRESHOLD = "local_dictionary_threshold";
/**
* default value for local dictionary
*/
public static final String LOCAL_DICTIONARY_THRESHOLD_DEFAULT = "10000";
/**
* max dictionary threshold
*/
public static final int LOCAL_DICTIONARY_MAX = 100000;
/**
* min dictionary threshold
*/
public static final int LOCAL_DICTIONARY_MIN = 1000;
/**
* Table property to specify the columns for which local dictionary needs to be generated.
*/
public static final String LOCAL_DICTIONARY_INCLUDE = "local_dictionary_include";
/**
* Table property to specify the columns for which local dictionary should not be to be generated.
*/
public static final String LOCAL_DICTIONARY_EXCLUDE = "local_dictionary_exclude";
/**
* DMPROPERTY for Index DataMap, like lucene, bloomfilter DataMap,
* to indicate a list of column name to be indexed
*/
public static final String INDEX_COLUMNS = "INDEX_COLUMNS";
/**
* 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";
// default block size in MB
public static final String TABLE_BLOCK_SIZE_DEFAULT = "1024";
// table blocklet size in MB
public static final String TABLE_BLOCKLET_SIZE = "table_blocklet_size";
// default blocklet size value in MB
public static final String TABLE_BLOCKLET_SIZE_DEFAULT = "64";
/**
* set in column level to disable inverted index
* @Deprecated :This property is deprecated, it is kept just for compatibility
*/
public static final String NO_INVERTED_INDEX = "no_inverted_index";
// set in column level to enable inverted index
public static final String INVERTED_INDEX = "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";
/**
* property to be specified for caching min/max of required columns
*/
public static final String COLUMN_META_CACHE = "column_meta_cache";
/**
* property to be specified for caching level (Block/Blocket)
*/
public static final String CACHE_LEVEL = "cache_level";
/**
* default value for cache level
*/
public static final String CACHE_LEVEL_DEFAULT_VALUE = "BLOCK";
//////////////////////////////////////////////////////////////////////////////////////////
// Data loading parameter start here
//////////////////////////////////////////////////////////////////////////////////////////
/**
* Number of cores to be used while loading
*/
@CarbonProperty(dynamicConfigurable = true)
public static final String NUM_CORES_LOADING = "carbon.number.of.cores.while.loading";
/**
* default value of number of cores to be used
*/
public static final String NUM_CORES_DEFAULT_VAL = "2";
/**
* Number of cores to be used while compacting
*/
@CarbonProperty(dynamicConfigurable = true)
public static final String NUM_CORES_COMPACTING = "carbon.number.of.cores.while.compacting";
/**
* Number of cores to be used while alter partition
*/
@CarbonProperty
public static final String NUM_CORES_ALT_PARTITION = "carbon.number.of.cores.while.altPartition";
/**
* BYTEBUFFER_SIZE
*/
public static final int BYTEBUFFER_SIZE = 24 * 1024;
/**
* SORT_TEMP_FILE_LOCATION
*/
public static final String SORT_TEMP_FILE_LOCATION = "sortrowtmp";
/**
* 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;
/**
* SORT_FILE_WRITE_BUFFER_SIZE
*/
@CarbonProperty
public static final String CARBON_SORT_FILE_WRITE_BUFFER_SIZE =
"carbon.sort.file.write.buffer.size";
/**
* SORT_FILE_WRITE_BUFFER_SIZE_DEFAULT_VALUE
*/
public static final String CARBON_SORT_FILE_WRITE_BUFFER_SIZE_DEFAULT_VALUE = "16384";
public static final int CARBON_SORT_FILE_WRITE_BUFFER_SIZE_MIN = 10240;
public static final int CARBON_SORT_FILE_WRITE_BUFFER_SIZE_MAX = 10485760;
/**
* CSV_READ_BUFFER_SIZE
*/
@CarbonProperty
public static final String CSV_READ_BUFFER_SIZE = "carbon.csv.read.buffersize.byte";
/**
* CSV_READ_BUFFER_SIZE
* default value is 1mb
*/
public static final String CSV_READ_BUFFER_SIZE_DEFAULT = "1048576";
/**
* min value for csv read buffer size, 10 kb
*/
public static final int CSV_READ_BUFFER_SIZE_MIN = 10240;
/**
* max value for csv read buffer size, 10 mb
*/
public static final int CSV_READ_BUFFER_SIZE_MAX = 10485760;
/**
* 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 DEFAULT value
*/
public static final String CARBON_MERGE_SORT_READER_THREAD_DEFAULTVALUE = "3";
/**
* 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";
/**
* NUMBER_OF_TRIES_FOR_LOAD_METADATA_LOCK
*/
@CarbonProperty
public static final String NUMBER_OF_TRIES_FOR_CONCURRENT_LOCK =
"carbon.concurrent.lock.retries";
/**
* 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
*/
@CarbonProperty
public static final String MAX_TIMEOUT_FOR_CONCURRENT_LOCK =
"carbon.concurrent.lock.retry.timeout.sec";
/**
* 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_CARBON_LOCK
*/
@CarbonProperty
public static final String NUMBER_OF_TRIES_FOR_CARBON_LOCK =
"carbon.lock.retries";
/**
* NUMBER_OF_TRIES_FOR_CARBON_LOCK
*/
public static final int NUMBER_OF_TRIES_FOR_CARBON_LOCK_DEFAULT = 3;
/**
* MAX_TIMEOUT_FOR_CARBON_LOCK
*/
@CarbonProperty
public static final String MAX_TIMEOUT_FOR_CARBON_LOCK =
"carbon.lock.retry.timeout.sec";
/**
* MAX_TIMEOUT_FOR_CARBON_LOCK
*/
public static final int MAX_TIMEOUT_FOR_CARBON_LOCK_DEFAULT = 5;
/**
* 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;
/**
* ENABLE_AUTO_LOAD_MERGE
*/
@CarbonProperty(dynamicConfigurable = true)
public static final String ENABLE_AUTO_LOAD_MERGE = "carbon.enable.auto.load.merge";
/**
* DEFAULT value of ENABLE_AUTO_LOAD_MERGE
*/
public static final String DEFAULT_ENABLE_AUTO_LOAD_MERGE = "false";
/**
* 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 chunk default size
*/
public static final String DICTIONARY_ONE_CHUNK_SIZE_DEFAULT = "10000";
/**
* 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";
/**
* Size of Major Compaction in MBs
*/
@CarbonProperty(dynamicConfigurable = true)
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";
/**
* 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
*/
@InterfaceStability.Evolving
@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";
/**
* Which storage level to persist dataset when insert into data
* with 'carbon.insert.persist.enable'='true'
*/
@InterfaceStability.Evolving
@CarbonProperty
public static final String CARBON_INSERT_STORAGE_LEVEL =
"carbon.insert.storage.level";
/**
* The default value(MEMORY_AND_DISK) is the same as the default storage level of Dataset.
* Unlike `RDD.cache()`, the default storage level is set to be `MEMORY_AND_DISK` because
* recomputing the in-memory columnar representation of the underlying table is expensive.
*
* if user's executor has less memory, set the CARBON_INSERT_STORAGE_LEVEL
* to MEMORY_AND_DISK_SER or other storage level to correspond to different environment.
* You can get more recommendations about storage level in spark website:
* http://spark.apache.org/docs/latest/rdd-programming-guide.html#rdd-persistence.
*/
public static final String CARBON_INSERT_STORAGE_LEVEL_DEFAULT = "MEMORY_AND_DISK";
/**
* Number of unmerged segments to be merged.
*/
@CarbonProperty(dynamicConfigurable = true)
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";
/**
* @Deprecated : This property has been deprecated.
* Property for enabling system level compaction lock.1 compaction can run at once.
*/
@CarbonProperty
public static final String ENABLE_CONCURRENT_COMPACTION = "carbon.concurrent.compaction";
/**
* Default value of Property for enabling system level compaction lock.1 compaction can run
* at once.
*/
public static final String DEFAULT_ENABLE_CONCURRENT_COMPACTION = "true";
/**
* This batch size is used to send rows from load step to another step in batches.
*/
@CarbonProperty
public static final String DATA_LOAD_BATCH_SIZE = "DATA_LOAD_BATCH_SIZE";
/**
* Default size of data load batch size.
*/
public static final String DATA_LOAD_BATCH_SIZE_DEFAULT = "1000";
/**
* to determine to use the rdd persist or not.
*/
@InterfaceStability.Evolving
@CarbonProperty
public static final String CARBON_UPDATE_PERSIST_ENABLE = "carbon.update.persist.enable";
/**
* by default rdd will be persisted in the update case.
*/
public static final String CARBON_UPDATE_PERSIST_ENABLE_DEFAULT = "true";
/**
* for enabling or disabling Horizontal Compaction.
*/
@CarbonProperty
public static final String CARBON_HORIZONTAL_COMPACTION_ENABLE =
"carbon.horizontal.compaction.enable";
/**
* Default value for HorizontalCompaction is true.
*/
public static final String CARBON_HORIZONTAL_COMPACTION_ENABLE_DEFAULT = "true";
/**
* Which storage level to persist dataset when updating data
* with 'carbon.update.persist.enable'='true'
*/
@InterfaceStability.Evolving
@CarbonProperty
public static final String CARBON_UPDATE_STORAGE_LEVEL =
"carbon.update.storage.level";
/**
* The default value(MEMORY_AND_DISK) is the same as the default storage level of Dataset.
* Unlike `RDD.cache()`, the default storage level is set to be `MEMORY_AND_DISK` because
* recomputing the in-memory columnar representation of the underlying table is expensive.
*
* if user's executor has less memory, set the CARBON_UPDATE_STORAGE_LEVEL
* to MEMORY_AND_DISK_SER or other storage level to correspond to different environment.
* You can get more recommendations about storage level in spark website:
* http://spark.apache.org/docs/latest/rdd-programming-guide.html#rdd-persistence.
*/
public static final String CARBON_UPDATE_STORAGE_LEVEL_DEFAULT = "MEMORY_AND_DISK";
/**
* to enable unsafe column page
*/
@CarbonProperty
public static final String ENABLE_UNSAFE_COLUMN_PAGE = "enable.unsafe.columnpage";
/**
* default value of ENABLE_UNSAFE_COLUMN_PAGE
*/
public static final String ENABLE_UNSAFE_COLUMN_PAGE_DEFAULT = "true";
/**
* to enable offheap sort
*/
@CarbonProperty(dynamicConfigurable = true)
public static final String ENABLE_UNSAFE_SORT = "enable.unsafe.sort";
/**
* to enable offheap sort
*/
public static final String ENABLE_UNSAFE_SORT_DEFAULT = "true";
/**
* to enable offheap sort
*/
@CarbonProperty(dynamicConfigurable = true)
public static final String ENABLE_OFFHEAP_SORT = "enable.offheap.sort";
/**
* to enable offheap sort
*/
public static final String ENABLE_OFFHEAP_SORT_DEFAULT = "true";
@CarbonProperty
public static final String ENABLE_INMEMORY_MERGE_SORT = "enable.inmemory.merge.sort";
public static final String ENABLE_INMEMORY_MERGE_SORT_DEFAULT = "false";
@CarbonProperty
public static final String OFFHEAP_SORT_CHUNK_SIZE_IN_MB = "offheap.sort.chunk.size.inmb";
public static final String OFFHEAP_SORT_CHUNK_SIZE_IN_MB_DEFAULT = "64";
@CarbonProperty
public static final String UNSAFE_WORKING_MEMORY_IN_MB = "carbon.unsafe.working.memory.in.mb";
public static final String UNSAFE_WORKING_MEMORY_IN_MB_DEFAULT = "512";
@CarbonProperty
public static final String UNSAFE_DRIVER_WORKING_MEMORY_IN_MB =
"carbon.unsafe.driver.working.memory.in.mb";
/**
* Sorts the data in batches and writes the batch data to store with index file.
*/
@CarbonProperty
public static final String LOAD_SORT_SCOPE = "carbon.load.sort.scope";
/**
* If set to BATCH_SORT, the sorting scope is smaller and more index tree will be created,
* thus loading is faster but query maybe slower.
* If set to LOCAL_SORT, the sorting scope is bigger and one index tree per data node will be
* created, thus loading is slower but query is faster.
* If set to GLOBAL_SORT, the sorting scope is bigger and one index tree per task will be
* created, thus loading is slower but query is faster.
*/
public static final String LOAD_SORT_SCOPE_DEFAULT = "LOCAL_SORT";
/**
* Size of batch data to keep in memory, as a thumb rule it supposed
* to be less than 45% of sort.inmemory.size.inmb otherwise it may spill intermediate data to disk
*/
@CarbonProperty
public static final String LOAD_BATCH_SORT_SIZE_INMB = "carbon.load.batch.sort.size.inmb";
public static final String LOAD_BATCH_SORT_SIZE_INMB_DEFAULT = "0";
/**
* The Number of partitions to use when shuffling data for sort. If user don't configurate or
* configurate it less than 1, it uses the number of map tasks as reduce tasks. In general, we
* recommend 2-3 tasks per CPU core in your cluster.
*/
@CarbonProperty
public static final String LOAD_GLOBAL_SORT_PARTITIONS = "carbon.load.global.sort.partitions";
public static final String LOAD_GLOBAL_SORT_PARTITIONS_DEFAULT = "0";
/*
* carbon dictionary server port
*/
@CarbonProperty
public static final String DICTIONARY_SERVER_PORT = "carbon.dictionary.server.port";
/**
* Default carbon dictionary server port
*/
public static final String DICTIONARY_SERVER_PORT_DEFAULT = "2030";
/**
* whether to prefetch data while loading.
*/
@CarbonProperty
public static final String USE_PREFETCH_WHILE_LOADING = "carbon.loading.prefetch";
/**