[jira] [Created] (OAK-1818) DataStore: log mechanism for important operations

["Thomas Mueller (JIRA)" <ji...@apache.org>]

Thomas Mueller created OAK-1818:
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             Summary: DataStore: log mechanism for important operations
                 Key: OAK-1818
                 URL: https://issues.apache.org/jira/browse/OAK-1818
             Project: Jackrabbit Oak
          Issue Type: New Feature
            Reporter: Thomas Mueller
            Priority: Minor


The FileDataStore can be shared by multiple repositories, which sometimes leads to problems if not used or configured correctly.

To avoid (or at least speed up analyzing) such problems, we could add log files to the datastore, such that all important operations are logged there. For example:

    datastore/log_20140514_140410.txt
    datastore/log_20140512_110343.txt

Let's say the last 14 days of operations are kept, and older files are removed. And let's say the following operations, each operation creating a new log file, are logged: (a) opening the datastore, (b) datastore garbage collection. Opening the datastore would log the repository home directory (or some other information so we can track who uses the datastore). Garbage collection would log the repository home (same as a), plus some statistics about what was deleted, maybe even all the files that were deleted. 

Each operation creates a new file so that sharing a datastore is possible.



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