hydra

Class DiskStorePrms

java.lang.Object

hydra.BasePrms

hydra.DiskStorePrms

public class DiskStorePrms
extends BasePrms

A class used to store keys for disk store configuration settings. The settings are used to create instances of DiskStoreDescription.

The number of description instances is gated by names. For other parameters, if fewer values than names are given, the remaining instances will use the last value in the list. See $JTESTS/hydra/hydra.txt for more details.

Unused parameters default to null, except where noted. This uses the product default, except where noted.

Values, fields, and subfields of a parameter can be set to BasePrms.DEFAULT, except where noted. This uses the product default, except where noted.

Values, fields, and subfields can be set to BasePrms.NONE where noted, with the documented effect.

Values, fields, and subfields of a parameter can use oneof, range, or robing except where noted, but each description created will use a fixed value chosen at test configuration time. Use as a task attribute is illegal.

Subfields are order-dependent, as stated in the javadocs for parameters that use them.

Field Summary

Fields

Modifier and Type	Field and Description
static java.lang.Long	allowForceCompaction (boolean(s)) Allow force compaction for each disk store.
static java.lang.Long	autoCompact (boolean(s)) Auto compact for each disk store.
static java.lang.Long	compactionThreshold (int(s)) Compaction threshold for each disk store.
static java.lang.Long	diskDirBaseMapFileName (String(s)) Absolute name of a file containing a mapping of physical host names to lists of absolute base paths to use for each data store.
static java.lang.Long	diskDirBases (Comma-separated String plus String(s) list) Absolute base paths for disk directories for each disk store, where each entry consists of a physical host name and list of base paths.
static java.lang.Long	diskDirNum (int(s)) Number of disk directories to use for each data store.
static java.lang.Long	diskDirSizes (Comma-separated int(s)) Sizes of disk directories to use for each data store, in megabytes.
static java.lang.Long	maxOplogSize (long(s)) Max oplog size for each disk store, in megabytes.
static java.lang.Long	names (String(s)) Logical names of the disk store descriptions and actual names of the disk stores.
static java.lang.Long	queueSize (int(s)) Queue size for each disk store.
static java.lang.Long	timeInterval (long(s)) Time interval for each disk store, in milliseconds.
static java.lang.Long	writeBufferSize (int(s)) Write buffer size for each disk store, in bytes.

Fields inherited from class hydra.BasePrms

DASH, DEFAULT, NONE

Constructor Summary

Constructors

Constructor and Description
DiskStorePrms()

Method Summary

Methods inherited from class hydra.BasePrms

dumpKeys, keyForName, nameForKey, setValues, tab, tasktab

Methods inherited from class java.lang.Object

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

Field Detail

names

public static java.lang.Long names

(String(s)) Logical names of the disk store descriptions and actual names of the disk stores. Each name must be unique. Defaults to null. Not for use with oneof, range, or robing.

allowForceCompaction

public static java.lang.Long allowForceCompaction

(boolean(s)) Allow force compaction for each disk store.

autoCompact

public static java.lang.Long autoCompact

(boolean(s)) Auto compact for each disk store.

compactionThreshold

public static java.lang.Long compactionThreshold

(int(s)) Compaction threshold for each disk store.

diskDirBases

public static java.lang.Long diskDirBases

(Comma-separated String plus String(s) list) Absolute base paths for disk directories for each disk store, where each entry consists of a physical host name and list of base paths. Defaults to null, which uses the same resource directory path configured in HostPrms.

Example: hydra.DiskStorePrms-names = store1 store2; hydra.DiskStorePrms-diskDirNum = 3; hydra.DiskStorePrms-diskDirBases = // store1 wheat /export/wheat1/users/me/scratch /export/wheat2/users/me/scratch millet /export/millet1/users/me/scratch /export/millet2/users/me/scratch /export/millet3/users/me/scratch , // store2 default ; A region using store1 on host wheat will spread its diskDirNum disk directories round robin onto the wheat file systems (wheat1, wheat2, wheat1), while a region using store1 on host millet will use the millet file systems (millet1, millet2, millet3). A region using store2 will use the same path as the system directory.

To move remote disk directories back to the master directory after a test run, set -DmoveRemoteDirs=true in your batterytest command.

See also diskDirBaseMapFileName.

diskDirBaseMapFileName

public static java.lang.Long diskDirBaseMapFileName

(String(s)) Absolute name of a file containing a mapping of physical host names to lists of absolute base paths to use for each data store. Overrides diskDirBases. Defaults to null (no map file is used).

Example: hydra.DiskStorePrms-names = store1 store2; hydra.DiskStorePrms-diskDirNum = 3; hydra.DiskStorePrms-diskDirBaseMapFileName = /home/me/bin/diskmap.txt default; where diskmap.txt contains: wheat /export/wheat1/users/me/scratch /export/wheat2/users/me/scratch millet /export/millet1/users/me/scratch /export/millet2/users/me/scratch /export/millet3/users/me/scratch A region using store1 on host wheat will spread its diskDirNum disk directories round robin onto the wheat file systems (wheat1, wheat2, wheat1), while a region using store1 on host millet will use the millet file systems (millet1, millet2, millet3). A process using store2 will use the same path as the system directory.

diskDirNum

public static java.lang.Long diskDirNum

(int(s)) Number of disk directories to use for each data store. Defaults to 1.

The directory names are autogenerated at runtime, numbered consecutively, using the base path(s) determined by diskDirBases and diskDirBaseMapFileName. If there is more than one base path available, the disk directories are assigned to them in a round robin fashion.

diskDirSizes

public static java.lang.Long diskDirSizes

(Comma-separated int(s)) Sizes of disk directories to use for each data store, in megabytes. If more than diskDirNum sizes are given, the extra sizes are ignored.

maxOplogSize

public static java.lang.Long maxOplogSize

(long(s)) Max oplog size for each disk store, in megabytes.

queueSize

public static java.lang.Long queueSize

(int(s)) Queue size for each disk store.

timeInterval

public static java.lang.Long timeInterval

(long(s)) Time interval for each disk store, in milliseconds.

writeBufferSize

public static java.lang.Long writeBufferSize

(int(s)) Write buffer size for each disk store, in bytes.

Constructor Detail

DiskStorePrms

public DiskStorePrms()