HConstants (Apache HBase 2.0.0-SNAPSHOT API)

java.lang.Object
+
- org.apache.hadoop.hbase.HConstants
+

+
+

@InterfaceAudience.Public
+@InterfaceStability.Stable
+public final class HConstants
+extends Object

HConstants holds a bunch of HBase-related constants

+ +

+ + +

Field Summary

+ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +

Fields
Modifier and Type	Field and Description
`static int`	`ADMIN_QOS`
`static int`	`ALL_VERSIONS` + Define for 'return-all-versions'. +
`static String`	`BASE_NAMESPACE_DIR`
`static String`	`BUCKET_CACHE_IOENGINE_KEY` + Current ioengine options in include: heap, offheap and file:PATH (where PATH is the path + to the file that will host the file-based cache. +
`static String`	`BUCKET_CACHE_SIZE_KEY` + When using bucket cache, this is a float that EITHER represents a percentage of total heap + memory size to give to the cache (if < 1.0) OR, it is the capacity in + megabytes of the cache. +
`static String`	`BYTES_PER_CHECKSUM` + The name of the configuration parameter that specifies + the number of bytes in a newly created checksum chunk. +
`static byte[]`	`CATALOG_FAMILY` + The catalog family +
`static String`	`CATALOG_FAMILY_STR` + The catalog family as a string +
`static String`	`CHECKSUM_TYPE_NAME` + The name of the configuration parameter that specifies + the name of an algorithm that is used to compute checksums + for newly created blocks. +
`static String`	`CIPHER_AES` + Default cipher for encryption +
`static String`	`CLIENT_PORT_STR` + The ZK client port key in the ZK properties map. +
`static String`	`CLUSTER_DISTRIBUTED` + Cluster is in distributed mode or not +
`static String`	`CLUSTER_ID_DEFAULT` + Default value for cluster ID +
`static String`	`CLUSTER_ID_FILE_NAME` + name of the file for unique cluster ID +
`static boolean`	`CLUSTER_IS_DISTRIBUTED` + Cluster is fully-distributed +
`static boolean`	`CLUSTER_IS_LOCAL` + Cluster is standalone or pseudo-distributed +
`static String`	`COMPACTION_KV_MAX` + Parameter name for the maximum batch of KVs to be used in flushes and compactions +
`static int`	`COMPACTION_KV_MAX_DEFAULT`
`static String`	`CONFIGURATION`
`static String`	`CORRUPT_DIR_NAME`
`static Pattern`	`CP_HTD_ATTR_KEY_PATTERN`
`static String`	`CP_HTD_ATTR_VALUE_PARAM_KEY_PATTERN`
`static Pattern`	`CP_HTD_ATTR_VALUE_PARAM_PATTERN`
`static String`	`CP_HTD_ATTR_VALUE_PARAM_VALUE_PATTERN`
`static Pattern`	`CP_HTD_ATTR_VALUE_PATTERN` + Pattern that matches a coprocessor specification. +
`static String`	`CRYPTO_ALTERNATE_KEY_ALGORITHM_CONF_KEY` + Configuration key for the name of the alternate cipher algorithm for the cluster, a string +
`static String`	`CRYPTO_CIPHERPROVIDER_CONF_KEY` + Configuration key for the crypto algorithm provider, a class name +
`static String`	`CRYPTO_KEY_ALGORITHM_CONF_KEY` + Configuration key for the algorithm used for creating jks key, a string +
`static String`	`CRYPTO_KEYPROVIDER_CONF_KEY` + Configuration key for the crypto key provider, a class name +
`static String`	`CRYPTO_KEYPROVIDER_PARAMETERS_KEY` + Configuration key for the crypto key provider parameters +
`static String`	`CRYPTO_MASTERKEY_ALTERNATE_NAME_CONF_KEY` + Configuration key for the name of the alternate master key for the cluster, a string +
`static String`	`CRYPTO_MASTERKEY_NAME_CONF_KEY` + Configuration key for the name of the master key for the cluster, a string +
`static String`	`CRYPTO_WAL_ALGORITHM_CONF_KEY` + Configuration key for the algorithm to use when encrypting the WAL, a string +
`static String`	`CRYPTO_WAL_KEY_NAME_CONF_KEY` + Configuration key for the name of the master WAL encryption key for the cluster, a string +
`static String`	`DATA_FILE_UMASK_KEY` + File permission umask to use when creating hbase data files +
`static int`	`DAY_IN_SECONDS` + Seconds in a day, hour and minute +
`static int`	`DEFAULT_BLOCKSIZE` + Default block size for an HFile. +
`static boolean`	`DEFAULT_CLUSTER_DISTRIBUTED` + Default value for cluster distributed mode +
`static UUID`	`DEFAULT_CLUSTER_ID` + Default cluster ID, cannot be used to identify a cluster so a key with + this value means it wasn't meant for replication. +
`static boolean`	`DEFAULT_DISALLOW_WRITES_IN_RECOVERING_CONFIG`
`static boolean`	`DEFAULT_DISTRIBUTED_LOG_REPLAY_CONFIG`
`static boolean`	`DEFAULT_ENABLE_CLIENT_BACKPRESSURE`
`static int`	`DEFAULT_HBASE_CLIENT_MAX_PERREGION_TASKS` + Default value of `HBASE_CLIENT_MAX_PERREGION_TASKS`. +
`static int`	`DEFAULT_HBASE_CLIENT_MAX_PERSERVER_TASKS` + Default value of `HBASE_CLIENT_MAX_PERSERVER_TASKS`. +
`static int`	`DEFAULT_HBASE_CLIENT_MAX_TOTAL_TASKS` + Default value of `HBASE_CLIENT_MAX_TOTAL_TASKS`. +
`static int`	`DEFAULT_HBASE_CLIENT_OPERATION_TIMEOUT` + Default HBase client operation timeout, which is tantamount to a blocking call +
`static long`	`DEFAULT_HBASE_CLIENT_PAUSE` + Default value of `HBASE_CLIENT_PAUSE`. +
`static int`	`DEFAULT_HBASE_CLIENT_RETRIES_NUMBER` + Default value of `HBASE_CLIENT_RETRIES_NUMBER`. +
`static int`	`DEFAULT_HBASE_CLIENT_SCANNER_CACHING` + Default value for `HBASE_CLIENT_SCANNER_CACHING` +
`static long`	`DEFAULT_HBASE_CLIENT_SCANNER_MAX_RESULT_SIZE` + Maximum number of bytes returned when calling a scanner's next method. +
`static int`	`DEFAULT_HBASE_CLIENT_SCANNER_TIMEOUT_PERIOD` + Default value of `HBASE_CLIENT_SCANNER_TIMEOUT_PERIOD`. +
`static int`	`DEFAULT_HBASE_META_BLOCK_SIZE` + Default value of `HBASE_META_BLOCK_SIZE`. +
`static int`	`DEFAULT_HBASE_META_SCANNER_CACHING` + Default value of `HBASE_META_SCANNER_CACHING`. +
`static int`	`DEFAULT_HBASE_META_VERSIONS` + Default value of `HBASE_META_VERSIONS`. +
`static int`	`DEFAULT_HBASE_RPC_SHORTOPERATION_TIMEOUT` + Default value of `HBASE_RPC_SHORTOPERATION_TIMEOUT_KEY` +
`static int`	`DEFAULT_HBASE_RPC_TIMEOUT` + Default value of `HBASE_RPC_TIMEOUT_KEY` +
`static int`	`DEFAULT_HBASE_SERVER_PAUSE` + Default value of `HBASE_SERVER_PAUSE`. +
`static long`	`DEFAULT_HBASE_SERVER_SCANNER_MAX_RESULT_SIZE` + Maximum number of bytes returned when calling a scanner's next method. +
`static int`	`DEFAULT_HEALTH_FAILURE_THRESHOLD`
`static long`	`DEFAULT_HEALTH_SCRIPT_TIMEOUT`
`static float`	`DEFAULT_HEAP_OCCUPANCY_HIGH_WATERMARK`
`static float`	`DEFAULT_HEAP_OCCUPANCY_LOW_WATERMARK`
`static String`	`DEFAULT_HOST` + default host address +
`static boolean`	`DEFAULT_HREGION_EDITS_REPLAY_SKIP_ERRORS`
`static int`	`DEFAULT_HREGION_MEMSTORE_BLOCK_MULTIPLIER` + Default value for hbase.hregion.memstore.block.multiplier +
`static int`	`DEFAULT_HSTORE_OPEN_AND_CLOSE_THREADS_MAX` + The default number for the max number of threads used for opening and + closing stores or store files in parallel +
`static int`	`DEFAULT_MASTER_HANLDER_COUNT`
`static int`	`DEFAULT_MASTER_INFOPORT` + default port for master web api +
`static int`	`DEFAULT_MASTER_PORT` + default port that the master listens on +
`static boolean`	`DEFAULT_MASTER_TYPE_BACKUP` + by default every master is a possible primary master unless the conf explicitly overrides it +
`static long`	`DEFAULT_MAX_FILE_SIZE` + Default maximum file size +
`static int`	`DEFAULT_META_REPLICA_NUM`
`static double`	`DEFAULT_REGION_SERVER_HANDLER_ABORT_ON_ERROR_PERCENT`
`static int`	`DEFAULT_REGION_SERVER_HANDLER_COUNT`
`static int`	`DEFAULT_REGION_SERVER_HIGH_PRIORITY_HANDLER_COUNT`
`static int`	`DEFAULT_REGION_SERVER_REPLICATION_HANDLER_COUNT`
`static int`	`DEFAULT_REGIONSERVER_INFOPORT` + default port for region server web api +
`static long`	`DEFAULT_REGIONSERVER_METRICS_PERIOD`
`static int`	`DEFAULT_REGIONSERVER_PORT` + Default port region server listens on. +
`static String`	`DEFAULT_STATUS_MULTICAST_ADDRESS`
`static String`	`DEFAULT_STATUS_MULTICAST_BIND_ADDRESS`
`static int`	`DEFAULT_STATUS_MULTICAST_PORT`
`static int`	`DEFAULT_THREAD_WAKE_FREQUENCY` + Default value for thread wake frequency +
`static boolean`	`DEFAULT_USE_META_REPLICAS`
`static int`	`DEFAULT_VERSION_FILE_WRITE_ATTEMPTS` + Parameter name for how often we should try to write a version file, before failing +
`static String`	`DEFAULT_WAL_STORAGE_POLICY`
`static int`	`DEFAULT_ZK_SESSION_TIMEOUT` + Default value for ZooKeeper session timeout +
`static String`	`DEFAULT_ZOOKEEPER_ZNODE_PARENT`
`static int`	`DEFAULT_ZOOKEPER_CLIENT_PORT` + Default client port that the zookeeper listens on +
`static int`	`DEFAULT_ZOOKEPER_MAX_CLIENT_CNXNS` + Default limit on concurrent client-side zookeeper connections +
`static long`	`DEFAULT_ZOOKEPER_RECOVERABLE_WAITIME` + Default wait time for the recoverable zookeeper +
`static int`	`DELIMITER` + delimiter used between portions of a region name +
`static String`	`DISALLOW_WRITES_IN_RECOVERING`
`static String`	`DISTRIBUTED_LOG_REPLAY_KEY` + Conf key that enables unflushed WAL edits directly being replayed to region servers +
`static byte[]`	`EMPTY_BYTE_ARRAY` + An empty instance. +
`static ByteBuffer`	`EMPTY_BYTE_BUFFER`
`static byte[]`	`EMPTY_END_ROW` + Last row in a table. +
`static byte[]`	`EMPTY_START_ROW` + Used by scanners, etc when they want to start at the beginning of a region +
`static String`	`ENABLE_CLIENT_BACKPRESSURE` + Config key for if the server should send backpressure and if the client should listen to + that backpressure from the server +
`static String`	`ENABLE_DATA_FILE_UMASK` + Enable file permission modification from standard hbase +
`static String`	`ENABLE_WAL_COMPRESSION` + Configuration name of WAL Compression +
`static String`	`ENABLE_WAL_ENCRYPTION` + Configuration key for enabling WAL encryption, a boolean +
`static String`	`ENSEMBLE_TABLE_NAME` + The name of the ensemble table +
`static String`	`FILE_SYSTEM_VERSION` + Current version of file system. +
`static int`	`FOREVER` + Unlimited time-to-live. +
`static String`	`HBASE_CANARY_WRITE_DATA_TTL_KEY` + Canary config keys +
`static String`	`HBASE_CANARY_WRITE_PERSERVER_REGIONS_LOWERLIMIT_KEY`
`static String`	`HBASE_CANARY_WRITE_PERSERVER_REGIONS_UPPERLIMIT_KEY`
`static String`	`HBASE_CANARY_WRITE_TABLE_CHECK_PERIOD_KEY`
`static String`	`HBASE_CANARY_WRITE_VALUE_SIZE_KEY`
`static String`	`HBASE_CHECKSUM_VERIFICATION` + If this parameter is set to true, then hbase will read + data and then verify checksums. +
`static boolean`	`HBASE_CLIENT_ENABLE_FAST_FAIL_MODE_DEFAULT`
`static long`	`HBASE_CLIENT_FAST_FAIL_CLEANUP_DURATION_MS_DEFAULT`
`static String`	`HBASE_CLIENT_FAST_FAIL_CLEANUP_MS_DURATION_MS`
`static String`	`HBASE_CLIENT_FAST_FAIL_INTERCEPTOR_IMPL`
`static String`	`HBASE_CLIENT_FAST_FAIL_MODE_ENABLED` + Config for enabling/disabling the fast fail mode. +
`static String`	`HBASE_CLIENT_FAST_FAIL_THREASHOLD_MS`
`static long`	`HBASE_CLIENT_FAST_FAIL_THREASHOLD_MS_DEFAULT`
`static String`	`HBASE_CLIENT_INSTANCE_ID` + Parameter name for unique identifier for this `Configuration` + instance. +
`static String`	`HBASE_CLIENT_IPC_POOL_SIZE` + Parameter name for HBase client IPC pool size +
`static String`	`HBASE_CLIENT_IPC_POOL_TYPE` + Parameter name for HBase client IPC pool type +
`static String`	`HBASE_CLIENT_MAX_PERREGION_TASKS` + The maximum number of concurrent connections the client will maintain to a single + Region. +
`static String`	`HBASE_CLIENT_MAX_PERSERVER_TASKS` + The maximum number of concurrent connections the client will maintain to a single + RegionServer. +
`static String`	`HBASE_CLIENT_MAX_TOTAL_TASKS` + The maximum number of concurrent connections the client will maintain. +
`static String`	`HBASE_CLIENT_META_OPERATION_TIMEOUT` + Parameter name for HBase client operation timeout, which overrides RPC timeout +
`static String`	`HBASE_CLIENT_OPERATION_TIMEOUT` + Parameter name for HBase client operation timeout, which overrides RPC timeout +
`static String`	`HBASE_CLIENT_PAUSE` + Parameter name for client pause value, used mostly as value to wait + before running a retry of a failed get, region lookup, etc. +
`static String`	`HBASE_CLIENT_RETRIES_NUMBER` + Parameter name for maximum retries, used as maximum for all retryable + operations such as fetching of the root region from root region server, + getting a cell's value, starting a row update, etc. +
`static String`	`HBASE_CLIENT_SCANNER_CACHING` + Parameter name to set the default scanner caching for all clients. +
`static String`	`HBASE_CLIENT_SCANNER_MAX_RESULT_SIZE_KEY` + Parameter name for maximum number of bytes returned when calling a scanner's next method. +
`static String`	`HBASE_CLIENT_SCANNER_TIMEOUT_PERIOD` + The client scanner timeout period in milliseconds. +
`static float`	`HBASE_CLUSTER_MINIMUM_MEMORY_THRESHOLD`
`static String`	`HBASE_COORDINATED_STATE_MANAGER_CLASS` + Config for pluggable consensus provider +
`static String`	`HBASE_DIR` + Parameter name for HBase instance root directory +
`static String`	`HBASE_MASTER_LOADBALANCE_BYTABLE` + Config for balancing the cluster by table +
`static String`	`HBASE_MASTER_LOADBALANCER_CLASS` + Config for pluggable load balancers +
`static String`	`HBASE_MASTER_LOGCLEANER_PLUGINS`
`static String`	`HBASE_MASTER_NORMALIZER_CLASS` + Config for pluggable region normalizer +
`static String`	`HBASE_META_BLOCK_SIZE` + Parameter name for number of versions, kept by meta table. +
`static String`	`HBASE_META_SCANNER_CACHING` + Parameter name for number of rows that will be fetched when calling next on + a scanner if it is not served from memory. +
`static String`	`HBASE_META_VERSIONS` + Parameter name for number of versions, kept by meta table. +
`static List<String>`	`HBASE_NON_TABLE_DIRS` + Directories that are not HBase table directories +
`static List<String>`	`HBASE_NON_USER_TABLE_DIRS` + Directories that are not HBase user table directories +
`static String`	`HBASE_NORMALIZER_ENABLED` + Config for enabling/disabling pluggable region normalizer +
`static String`	`HBASE_REGION_SPLIT_POLICY_KEY`
`static String`	`HBASE_REGIONSERVER_LEASE_PERIOD_KEY` + Deprecated. + This config option is deprecated. Will be removed at later releases after 0.96. + +
`static String`	`HBASE_RPC_SHORTOPERATION_TIMEOUT_KEY` + timeout for short operation RPC +
`static String`	`HBASE_RPC_TIMEOUT_KEY` + timeout for each RPC +
`static String`	`HBASE_RS_NONCES_ENABLED` + Whether nonces are enabled; default is true. +
`static String`	`HBASE_SERVER_PAUSE` + Parameter name for server pause value, used mostly as value to wait before + running a retry of a failed operation. +
`static String`	`HBASE_SERVER_SCANNER_MAX_RESULT_SIZE_KEY` + Parameter name for maximum number of bytes returned when calling a scanner's next method. +
`static String`	`HBASE_SPLITLOG_MANAGER_TIMEOUT` + Configuration key for SplitLog manager timeout +
`static String`	`HBASE_TEMP_DIRECTORY` + Temporary directory used for table creation and deletion +
`static String`	`HBASECLIENT_IMPL` + Parameter name for what hbase client implementation to use. +
`static String`	`HBCK_CODE_NAME` + HBCK special code name used as server name when manipulating ZK nodes +
`static String`	`HBCK_SIDELINEDIR_NAME` + Used by HBCK to sideline backup data +
`static String`	`HEALTH_CHORE_WAKE_FREQ`
`static String`	`HEALTH_FAILURE_THRESHOLD` + The maximum number of health check failures a server can encounter consecutively. +
`static String`	`HEALTH_SCRIPT_LOC` + Health script related settings. +
`static String`	`HEALTH_SCRIPT_TIMEOUT`
`static String`	`HEAP_OCCUPANCY_HIGH_WATERMARK_KEY`
`static String`	`HEAP_OCCUPANCY_LOW_WATERMARK_KEY`
`static String`	`HFILE_ARCHIVE_DIRECTORY` + Directory under /hbase where archived hfiles are stored +
`static float`	`HFILE_BLOCK_CACHE_SIZE_DEFAULT`
`static String`	`HFILE_BLOCK_CACHE_SIZE_KEY` + Configuration key for the size of the block cache +
`static byte[]`	`HFILEBLOCK_DUMMY_HEADER` + Just an array of bytes of the right size. +
`static int`	`HFILEBLOCK_HEADER_SIZE` + The size of a version 2 HFile block header, minor version 1. +
`static int`	`HFILEBLOCK_HEADER_SIZE_NO_CHECKSUM` + The size data structures with minor version is 0 +
`static int`	`HIGH_QOS`
`static int`	`HOUR_IN_SECONDS`
`static String`	`HREGION_COMPACTIONDIR_NAME` + Used to construct the name of the compaction directory during compaction +
`static String`	`HREGION_EDITS_REPLAY_SKIP_ERRORS`
`static String`	`HREGION_LOGDIR_NAME` + Used to construct the name of the log directory for a region server +
`static String`	`HREGION_MAX_FILESIZE` + Conf key for the max file size after which we split the region +
`static String`	`HREGION_MEMSTORE_BLOCK_MULTIPLIER` + Block updates if memstore has hbase.hregion.memstore.block.multiplier + times hbase.hregion.memstore.flush.size bytes. +
`static String`	`HREGION_MEMSTORE_FLUSH_SIZE` + Conf key for the memstore size at which we flush the memstore +
`static String`	`HREGION_OLDLOGDIR_NAME` + Like the previous, but for old logs that are about to be deleted +
`static String`	`HSTORE_OPEN_AND_CLOSE_THREADS_MAX` + The max number of threads used for opening and closing stores or store + files in parallel +
`static String`	`IN_MEMORY`
`static int`	`INDEX_KEY_MAGIC` + Used as a magic return value while optimized index key feature enabled(HBASE-7845) +
`static String`	`KEEP_SEQID_PERIOD` + Parameter name for # days to keep MVCC values during a major compaction +
`static String`	`KEY_FOR_HOSTNAME_SEEN_BY_MASTER`
`static byte[]`	`LAST_ROW` + Used by scanners and others when they're trying to detect the end of a + table +
`static long`	`LATEST_TIMESTAMP` + Timestamp to use when we want to refer to the latest cell. +
`static byte[]`	`LATEST_TIMESTAMP_BYTES` + LATEST_TIMESTAMP in bytes form +
`static String`	`LIB_DIR` + The directory from which co-processor/custom filter jars can be loaded + dynamically by the region servers. +
`static String`	`LOAD_BALANCER_SLOP_KEY`
`static String`	`LOCALHOST` + Host name of the local machine +
`static String`	`LOCALHOST_IP`
`static String`	`LOG_REPLAY_WAIT_REGION_TIMEOUT` + Conf key that specifies timeout value to wait for a region ready +
`static String`	`MAJOR_COMPACTION_PERIOD` + Parameter name for how often a region should should perform a major compaction +
`static String`	`MASTER_HANDLER_COUNT`
`static String`	`MASTER_IMPL` + Parameter name for what master implementation to use. +
`static String`	`MASTER_INFO_PORT` + Configuration key for master web API port +
`static String`	`MASTER_PORT` + Parameter name for port master listens on. +
`static String`	`MASTER_TYPE_BACKUP` + Parameter name for the master type being backup (waits for primary to go inactive). +
`static int`	`MAX_ROW_LENGTH` + Max length a row can have because of the limitation in TFile. +
`static int`	`MAXIMUM_VALUE_LENGTH` + Maximum value length, enforced on KeyValue construction +
`static byte[]`	`MERGEA_QUALIFIER` + The lower-half merge region column qualifier +
`static byte[]`	`MERGEB_QUALIFIER` + The upper-half merge region column qualifier +
`static String`	`META_REPLICAS_NUM`
`static int`	`META_ROW_DELIMITER` + delimiter used between portions of a region name +
`static byte[]`	`META_TABLE_NAME` + Deprecated. + For upgrades of 0.94 to 0.96 + +
`static short`	`META_VERSION` + The current version of the meta table. +
`static byte[]`

Class HConstants

Field Summary