Copyright © TIBCO Software Inc. All Rights Reserved
Copyright © TIBCO Software Inc. All Rights Reserved


Chapter 6 Using ActiveSpaces Monitoring and Management : Viewing Space Information

Viewing Space Information
ASMM lets you view basic information about each space attached to each metaspace in the data grid. You can view:
Definition Shows the definition for the space.
Schema Shows the schema for the space and the metadata that is active for each tuple field.
Members Shows information about the currently defined space members.
Indices Shows primary keys and secondary indexes for the selected space member.
To view information about a space:
1.
2.
The Space Information page for the selected space appears.
The following figure shows the Space Information page for the Employees space that is defined for a metaspace called AcmeSystems. The Employees space contains information that describes the various attributes of an employee at AcmeSystems (for example, name, age, and salary).
Figure 11 Space Information Page
Viewing a Space Definition
To view a space definition, on the Space Name page, click the Definition tab.
For the selected space, ASMM displays:
State The current state of the space. The value can be initial (meaning that the Space needs more seeders or more persisters), loading (meaning the space is being loaded from the persistence layer), or ready (meaning the space has enough seeders, persisters, and has been loaded)
Distribution Policy Can be either distributed (meaning the space is distributed) or non_distributed.
Replication count The replication count is displayed. Default is 0, meaning there is no replication.
Replication Policy Can be sync or async.
Capacity The capacity of the space in number of entries per seeder. -1 indicates no capacity.
Eviction policy The policy of the eviction to be applied when a space operation would cause the capacity to be exceeded. Can be none (no eviction) or LRU (least recently used eviction).
Min seeders The minimum number of seeders that need to be joined to the space before the space becomes ready.
Persistence Type  Can be none, share_all, or, share_nothing,
Persistence Policy  Can be sync or async,
Update transport The transport protocol used to distribute notifications of updates to the data stored in the space. Can be unicast or multicast.
Entry TTL The TTL (time-to-live) of the entries stored in the spaces in milliseconds. Default is -1 (forever).
Lock wait The Lock wait defined for the space is displayed. Default is -1 (forever).
Lock TTL The Lock TTL (time-to-live) defined for the space is displayed. Default is -1 (forever).
Lock scope The lock scope defined for the space.
Viewing the Space Schema
To view the schema for the selected space, click the Schema tab.
ASMM displays the schema for the space.
Viewing the Space Members
To view information on the members connected to the selected space, click the Members tab.
ASMM displays a list of the space members, as shown in the following figure.
Figure 12 Members Page
For the each space member, the display shows:
Viewing Indices
To view the primary keys and secondary indexes defined for a space, click the Indices tab.
ASMM displays the primary key, and any secondary indexes that are defined. For each primary key or index, the index type (HASH or TREE) and the key fields are shown.

Copyright © TIBCO Software Inc. All Rights Reserved
Copyright © TIBCO Software Inc. All Rights Reserved