org.rocksdb

Enum HistogramType

java.lang.Object

java.lang.Enum<HistogramType>

org.rocksdb.HistogramType

All Implemented Interfaces:

Serializable, Comparable<HistogramType>

public enum HistogramType
extends Enum<HistogramType>

Enum Constant Summary

Enum Constants

Enum Constant and Description
BLOB_DB_BLOB_FILE_READ_MICROS Blob file read latency.
BLOB_DB_BLOB_FILE_SYNC_MICROS Blob file sync latency.
BLOB_DB_BLOB_FILE_WRITE_MICROS Blob file write latency.
BLOB_DB_COMPRESSION_MICROS BlobDB compression time.
BLOB_DB_DECOMPRESSION_MICROS BlobDB decompression time.
BLOB_DB_GC_MICROS BlobDB garbage collection time.
BLOB_DB_GET_MICROS BlobDB Get lagency.
BLOB_DB_KEY_SIZE Size of keys written to BlobDB.
BLOB_DB_MULTIGET_MICROS BlobDB MultiGet latency.
BLOB_DB_NEXT_MICROS BlobDB Next latency.
BLOB_DB_PREV_MICROS BlobDB Prev latency.
BLOB_DB_SEEK_MICROS BlobDB Seek/SeekToFirst/SeekToLast/SeekForPrev latency.
BLOB_DB_VALUE_SIZE Size of values written to BlobDB.
BLOB_DB_WRITE_MICROS BlobDB Put/PutWithTTL/PutUntil/Write latency.
BYTES_COMPRESSED number of bytes compressed.
BYTES_DECOMPRESSED number of bytes decompressed.
BYTES_PER_MULTIGET
BYTES_PER_READ Value size distribution in each operation.
BYTES_PER_WRITE
COMPACTION_OUTFILE_SYNC_MICROS
COMPACTION_TIME
COMPRESSION_TIMES_NANOS
DB_GET
DB_MULTIGET
DB_SEEK
DB_WRITE
DECOMPRESSION_TIMES_NANOS
FLUSH_TIME Time spent flushing memtable to disk.
HARD_RATE_LIMIT_DELAY_COUNT
HISTOGRAM_ENUM_MAX
MANIFEST_FILE_SYNC_MICROS
NUM_DATA_BLOCKS_READ_PER_LEVEL Num of Data blocks read from file system per level in MultiGet request.
NUM_FILES_IN_SINGLE_COMPACTION
NUM_INDEX_AND_FILTER_BLOCKS_READ_PER_LEVEL Num of Index and Filter blocks read from file system per level in MultiGet request
NUM_SST_READ_PER_LEVEL Num of SST files read from file system per level in MultiGet request.
NUM_SUBCOMPACTIONS_SCHEDULED The number of subcompactions actually scheduled during a compaction.
READ_BLOCK_COMPACTION_MICROS
READ_BLOCK_GET_MICROS
READ_NUM_MERGE_OPERANDS
SOFT_RATE_LIMIT_DELAY_COUNT
SST_READ_MICROS
STALL_L0_NUM_FILES_COUNT
STALL_L0_SLOWDOWN_COUNT
STALL_MEMTABLE_COMPACTION_COUNT
SUBCOMPACTION_SETUP_TIME
TABLE_OPEN_IO_MICROS TIME SPENT IN IO DURING TABLE OPEN.
TABLE_SYNC_MICROS
WAL_FILE_SYNC_MICROS
WRITE_RAW_BLOCK_MICROS
WRITE_STALL

Method Summary

Modifier and Type	Method and Description
static HistogramType	getHistogramType(byte value) Get Histogram type by byte value.
byte	getValue() Returns the byte value of the enumerations value
static HistogramType	valueOf(String name) Returns the enum constant of this type with the specified name.
static HistogramType[]	values() Returns an array containing the constants of this enum type, in the order they are declared.

Methods inherited from class java.lang.Enum

clone, compareTo, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Enum Constant Detail

DB_GET

public static final HistogramType DB_GET

DB_WRITE

public static final HistogramType DB_WRITE

COMPACTION_TIME

public static final HistogramType COMPACTION_TIME

SUBCOMPACTION_SETUP_TIME

public static final HistogramType SUBCOMPACTION_SETUP_TIME

TABLE_SYNC_MICROS

public static final HistogramType TABLE_SYNC_MICROS

COMPACTION_OUTFILE_SYNC_MICROS

public static final HistogramType COMPACTION_OUTFILE_SYNC_MICROS

WAL_FILE_SYNC_MICROS

public static final HistogramType WAL_FILE_SYNC_MICROS

MANIFEST_FILE_SYNC_MICROS

public static final HistogramType MANIFEST_FILE_SYNC_MICROS

TABLE_OPEN_IO_MICROS

public static final HistogramType TABLE_OPEN_IO_MICROS

TIME SPENT IN IO DURING TABLE OPEN.

DB_MULTIGET

public static final HistogramType DB_MULTIGET

READ_BLOCK_COMPACTION_MICROS

public static final HistogramType READ_BLOCK_COMPACTION_MICROS

READ_BLOCK_GET_MICROS

public static final HistogramType READ_BLOCK_GET_MICROS

WRITE_RAW_BLOCK_MICROS

public static final HistogramType WRITE_RAW_BLOCK_MICROS

STALL_L0_SLOWDOWN_COUNT

public static final HistogramType STALL_L0_SLOWDOWN_COUNT

STALL_MEMTABLE_COMPACTION_COUNT

public static final HistogramType STALL_MEMTABLE_COMPACTION_COUNT

STALL_L0_NUM_FILES_COUNT

public static final HistogramType STALL_L0_NUM_FILES_COUNT

HARD_RATE_LIMIT_DELAY_COUNT

public static final HistogramType HARD_RATE_LIMIT_DELAY_COUNT

SOFT_RATE_LIMIT_DELAY_COUNT

public static final HistogramType SOFT_RATE_LIMIT_DELAY_COUNT

NUM_FILES_IN_SINGLE_COMPACTION

public static final HistogramType NUM_FILES_IN_SINGLE_COMPACTION

DB_SEEK

public static final HistogramType DB_SEEK

WRITE_STALL

public static final HistogramType WRITE_STALL

SST_READ_MICROS

public static final HistogramType SST_READ_MICROS

NUM_SUBCOMPACTIONS_SCHEDULED

public static final HistogramType NUM_SUBCOMPACTIONS_SCHEDULED

The number of subcompactions actually scheduled during a compaction.

BYTES_PER_READ

public static final HistogramType BYTES_PER_READ

Value size distribution in each operation.

BYTES_PER_WRITE

public static final HistogramType BYTES_PER_WRITE

BYTES_PER_MULTIGET

public static final HistogramType BYTES_PER_MULTIGET

BYTES_COMPRESSED

public static final HistogramType BYTES_COMPRESSED

number of bytes compressed.

BYTES_DECOMPRESSED

public static final HistogramType BYTES_DECOMPRESSED

number of bytes decompressed. number of bytes is when uncompressed; i.e. before/after respectively

COMPRESSION_TIMES_NANOS

public static final HistogramType COMPRESSION_TIMES_NANOS

DECOMPRESSION_TIMES_NANOS

public static final HistogramType DECOMPRESSION_TIMES_NANOS

READ_NUM_MERGE_OPERANDS

public static final HistogramType READ_NUM_MERGE_OPERANDS

FLUSH_TIME

public static final HistogramType FLUSH_TIME

Time spent flushing memtable to disk.

BLOB_DB_KEY_SIZE

public static final HistogramType BLOB_DB_KEY_SIZE

Size of keys written to BlobDB.

BLOB_DB_VALUE_SIZE

public static final HistogramType BLOB_DB_VALUE_SIZE

Size of values written to BlobDB.

BLOB_DB_WRITE_MICROS

public static final HistogramType BLOB_DB_WRITE_MICROS

BlobDB Put/PutWithTTL/PutUntil/Write latency.

BLOB_DB_GET_MICROS

public static final HistogramType BLOB_DB_GET_MICROS

BlobDB Get lagency.

BLOB_DB_MULTIGET_MICROS

public static final HistogramType BLOB_DB_MULTIGET_MICROS

BlobDB MultiGet latency.

BLOB_DB_SEEK_MICROS

public static final HistogramType BLOB_DB_SEEK_MICROS

BlobDB Seek/SeekToFirst/SeekToLast/SeekForPrev latency.

BLOB_DB_NEXT_MICROS

public static final HistogramType BLOB_DB_NEXT_MICROS

BlobDB Next latency.

BLOB_DB_PREV_MICROS

public static final HistogramType BLOB_DB_PREV_MICROS

BlobDB Prev latency.

BLOB_DB_BLOB_FILE_WRITE_MICROS

public static final HistogramType BLOB_DB_BLOB_FILE_WRITE_MICROS

Blob file write latency.

BLOB_DB_BLOB_FILE_READ_MICROS

public static final HistogramType BLOB_DB_BLOB_FILE_READ_MICROS

Blob file read latency.

BLOB_DB_BLOB_FILE_SYNC_MICROS

public static final HistogramType BLOB_DB_BLOB_FILE_SYNC_MICROS

Blob file sync latency.

BLOB_DB_GC_MICROS

public static final HistogramType BLOB_DB_GC_MICROS

BlobDB garbage collection time.

BLOB_DB_COMPRESSION_MICROS

public static final HistogramType BLOB_DB_COMPRESSION_MICROS

BlobDB compression time.

BLOB_DB_DECOMPRESSION_MICROS

public static final HistogramType BLOB_DB_DECOMPRESSION_MICROS

BlobDB decompression time.

NUM_INDEX_AND_FILTER_BLOCKS_READ_PER_LEVEL

public static final HistogramType NUM_INDEX_AND_FILTER_BLOCKS_READ_PER_LEVEL

Num of Index and Filter blocks read from file system per level in MultiGet request

NUM_DATA_BLOCKS_READ_PER_LEVEL

public static final HistogramType NUM_DATA_BLOCKS_READ_PER_LEVEL

Num of Data blocks read from file system per level in MultiGet request.

NUM_SST_READ_PER_LEVEL

public static final HistogramType NUM_SST_READ_PER_LEVEL

Num of SST files read from file system per level in MultiGet request.

HISTOGRAM_ENUM_MAX

public static final HistogramType HISTOGRAM_ENUM_MAX

Method Detail

values

public static HistogramType[] values()

Returns an array containing the constants of this enum type, in the order they are declared. This method may be used to iterate over the constants as follows:

for (HistogramType c : HistogramType.values())
    System.out.println(c);

Returns:

an array containing the constants of this enum type, in the order they are declared

valueOf

public static HistogramType valueOf(String name)

Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (Extraneous whitespace characters are not permitted.)

Parameters:

name - the name of the enum constant to be returned.

Returns:

the enum constant with the specified name

Throws:

IllegalArgumentException - if this enum type has no constant with the specified name

NullPointerException - if the argument is null

getValue

public byte getValue()

Returns the byte value of the enumerations value

Returns:

byte representation

getHistogramType

public static HistogramType getHistogramType(byte value)

Get Histogram type by byte value.

Parameters:

value - byte representation of HistogramType.

Returns:

HistogramType instance.

Throws:

IllegalArgumentException - if an invalid value is provided.