eG Monitoring
 

Measures reported by SolrUpdtHandTest

The Update Handler handles requests to change the index. It basically takes care of any add, deletes, commits optimization etc.When new data is added to Solr or existing data is modified it si thr job of update handler to update the indexes so that future searches will remain as effective. This test monitors the Update Handler by collecting sme of the key metrics like number of adds, number of commits, number of deletes and merges etc. It is important for administrators to know if all of these operation are working efficiently to ensure that overall health of search capability is good.

Outputs of the test :One set of results for each Solr core in Apache Solr setup.

The measures made by this test are as follows:

Measurement Description Measurement Unit Interpretation
adds ndicates the total number “Add” requests since last commit. Number If the cache fill ratio is towards 100%, it may be a sign that either the cache size is too small for the transactions it is supporting or there is some issue with cache invalidation and eviction algorithm.
autoCommits Indicates the number of auto commits executed. MB A large number of these operation can cause issue with indexes if update handler is not working porperly to update the indexes.
commits Indicates the total number of commits executed. Number A large number of these operation can cause issue with indexes if update handler is not working porperly to update the indexes.
deletesById Indicates the total number of deletes by Id which are yet uncommitted. Number A large number of these operation can cause issue with indexes if update handler is not working porperly to update the indexes.
deletesByQuery Indicates the total number of deletes by query which are yet uncommitted. Number A large number of these operation can cause issue with indexes if update handler is not working porperly to update the indexes.
docsPending Indicates the number of error messages received while performing addition/deletion/commit/rollback actions on documents over the lifetime of the core. Number A large number of these operation can cause issue with indexes if update handler is not working porperly to update the indexes.
errors Indicates the number of cache entries during the last measurement period Number A large number of these operation can cause issue with indexes if update handler is not working porperly to update the indexes.
expungeDeletes Indicates the number of commit commands issues with expunge delete. Percent A large number of these operation can cause issue with indexes if update handler is not working porperly to update the indexes.
merges Indicates the number index merges that have happened during the lifetime of the core. Number A large number of these operation can cause issue with indexes if update handler is not working porperly to update the indexes.
optimizes Indicates the number of optimize commands that have been issues so far. Number A large number of these operation can cause issue with indexes if update handler is not working porperly to update the indexes