Entity statistics display the distribution of entity across their types. A second column
displays the number of these entities that were marked as deleted.
Classification statistics list classifications assigned to entities and the count of
entities marked with that classification. The count for each classification is a hyperlink
that runs a search for entities marked with the classification.
Server statistics
Server statistics reflect the current server session and the metadata collection messages
that Atlas reads from a dedicated Kafka topic.
Server Statistics displays the following sections and fields:
Server Details
startTimeStamp — The timestamp when the Atlas server was
started.
activeTimeStamp — The timestamp when the server instance became
active and ready to process requests. In single-instance setups, this matches
startTimeStamp. In high-availability setups, it reflects when this
instance was elected active, including after failover.
upTime — The total elapsed time the server has been running since
startTimeStamp. In high-availability setups, this is measured from
when the process started, not from when the instance became active, so it can be nonzero
on a standby instance that has not yet been elected active.
statusBackendStore — The status of the Atlas server connection to
the persistence backend where entity metadata is stored (by default, the HBase namespace
for JanusGraph or when using the relational JanusGraph store, the configured JDBC
database).
statusIndexStore — The status of the Atlas server connection to the
Solr collection where entity metadata is indexed.
collectionTime — The last time metrics were calculated.
lastMessageProcessedTime — The timestamp of the last message Atlas
recorded from the Kafka topic where services publish metadata.
offsetCurrent — The index in the Kafka partition that was most
recently read.
offsetStart — The index in the Kafka partition that was first
read.
Notification Details
Kafka Topic-Partition
Atlas Hook — The primary topic through which integration hooks
and services (for example, Hive, HBase, and Spark) send metadata to Atlas.
Spark-Atlas Hook Topic — A supplementary topic provided for
Spark communication to Atlas.
Message Statistics
Period — The interval that the statistics apply to, including
the total lifetime of Atlas. Each period indicated includes a timestamp for when the
period started.
Count — The number of messages processed by Atlas during the
period.
Avg Time (ms) — The average time Atlas took to process a message
during the period, measured from when Atlas began processing the message to when its
entity changes were committed.
Creates — The number of entities produced from the messages
processed during the period.
Updates — The number of entities updated based on the messages
processed during the period.
Deletes — The number of entities deleted based on the messages
processed during the period.
Failed — The number of messages that were received but not
processed.
