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Measures reported by HiveServer2MetaConnTest
This test monitors the usage of the connection pools on the Metastore of the target Apache Hive data warehouse. Besides, this test accurately pinpoints the connection pool that is being over-utilized and hence running out of free connections. In the process, this test also reports the average time taken for a connection to be granted from each connection pool. Using this test, administrators can easily figure out the connection pool that is busy.
Outputs of the test: One set of results for the target Apache Hive
The measures made by this test are as follows:
| Measurement |
Description |
Measurement Unit |
Interpretation |
| totConn |
Indicates the number of connections created in this connection pool during the last measurement period. |
Number |
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| totFree |
Indicates the number of connections that are available for use in this connection pool. |
Number |
Ideally, the value of this measure is preferred to be high. A very low value of this measure could result in a shortage of connections in the pool.
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| totLease |
Indicates the number of connections currently in use in this connection pool during the last measurement period. |
Number |
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| ConnReq |
Indicates the number of connections requested for this connection pool during the last measurement period. |
Number |
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| connWait |
Indicates the average time a client has to wait before a connection was granted from this connection pool. |
Milliseconds |
A low value is desired for this measure.
Compare the value of this measure across the connection pools to figure out the connection pool that takes too long to grant a connection i.e., in other words administrator can figure out the connection pool that is too busy to grant a connection.
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