Apache Solr Reference Guide Covering Apache Solr 6.0

State
Meaning
NEW
RUNNABLE
BLOCKED
WAITING
TIMED_WAITING
TERMINATED
A thread that has not yet started.
A thread executing in the Java virtual machine.
A thread that is blocked waiting for a monitor lock.
A thread that is waiting indefinitely for another thread to perform a particular action.
A thread that is waiting for another thread to perform an action for up to a specified
waiting time.
A thread that has exited.
When you click on one of the threads that can be expanded, you'll see the stacktrace, as in the example below:
Inspecting a thread
You can also check the Show all Stacktraces button to automatically enable expansion for all threads.
Collection-Specific Tools
In the left-hand navigation bar, you will see a pull-down menu titled "Collection Selector" that can be used to
access collection specific administration screens.
Only Visible When using SolrCloud
The "Collection Selector" pull-down menu is only available on Solr instances running in SolrCloud mode.
Single node or master/slave replication instances of Solr will not display this menu, instead the Collection
specific UI pages described in this section will be available in the Core Selector pull-down menu.
Clicking on the Collection Selector pull-down menu will show a list of the collections in your Solr cluster, with a
search box that can be used to find a specific collection by name. When you select a collection from the
pull-down, the main display of the page will display some basic metadata about the collection, and a secondary
menu will appear in the left nav with links to additional collection specific administration screens.
Apache Solr Reference Guide 6.0
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