Index Probes

Index Probes
The index probes are triggered each time a a row is read using one of the indexes for the specified
table. The probe is triggered within the corresponding storage engine for the table.
index-read-row-start(database, table)
index-read-row-done(status)
• index-read-row-start: Triggered when a row is read by the storage engine from the specified
database and table.
• index-read-row-done: Triggered when an indexed row read operation within a storage engine
completes. The status returns 0 on success, or a positive value on failure.
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