Edit settings in the search-config.xml file
to specify the maximum number of threads used when indexing.
Before you begin
To edit configuration files, you must
use the IBM® WebSphere® Application Server wsadmin client.
See Starting the wsadmin
client for details.
About this task
By default, the maximum number of threads allowed when indexing
is 1, however you can change this value by modifying the search-config.xml file.
When you change the maximum number of indexing threads, you might
also need to adjust the thread settings for the SearchIndexingWorkManager
on each node. The Search application will use whichever setting is
lower. For more information about updating Search work managers, see Updating
Search work manager settings.
Procedure
To update the maximum number of threads that can be used
when indexing, complete the following steps.
- Start the wsadmin client from the following
directory of the system on which you installed the Deployment Manager:
app_server_root\profiles\dm_profile_root\bin
where
app_server_root is
the WebSphere Application
Server installation directory and
dm_profile_root is
the Deployment Manager profile directory, typically dmgr01.
You
must start the client from this directory or subsequent commands that
you enter do not execute correctly.
- After the wsadmin command environment
has initialized, enter the following command to initialize the Search
environment and start the Search script interpreter:
execfile("searchAdmin.py")
If prompted to specify a service to connect to, type 1 to pick
the first node in the list. Most commands can run on any node. If
the command writes or reads information to or from a file using a
local file path, you must pick the node where the file is stored.
When
the command is run successfully, the following message displays:
Search Administration initialized
-
Check out the Search cell-level configuration file, search-config.xml,
with the following command:
SearchCellConfig.checkOutConfig("working_dir",
"cellName")
Where:
- working_dir is the temporary directory to which you want to check out the
cell level configuration file. This directory must exist on the server where you are running the
wsadmin client. Use forward slashes to separate directories in the file path,
even if you are using the Microsoft
Windows operating
system.
Note: AIX, and Linux only: The
directory must grant write permissions or the command does not run successfully.
- cellName is the name of the cell that the Search node belongs to. The command
is case-sensitive. If you do not know the cell name, you can determine it by typing the following
command in the wsadmin command processor:
print
AdminControl.getCell()
For
example:
SearchCellConfig.checkOutConfig("c:/search_temp", "SearchServerNode01Cell")
- Enter the following command:
- SearchCellConfig.setMaxIndexerThreads(String maxThreadNumber)
Specifies the maximum number of indexer threads that can be
used when indexing. By default, the value is set to 1.
This
command takes a single argument that specifies the number of threads
allowed.
For example:
SearchCellConfig.setMaxIndexerThreads("3")
- Check in the updated search-config.xml configuration
file using the following wsadmin client command:
SearchCellConfig.checkInConfig()
- To exit the wsadmin client, type exit at
the prompt.
-
Stop the server or servers hosting the Search application, and then restart the Search servers.
The next time the scheduled task runs, persisted seedlists are retained after indexing
finishes.