Uploaded image for project: 'Jackrabbit Oak'
  1. Jackrabbit Oak
  2. OAK-4095

Include timestamp in journal log entries

    XMLWordPrintableJSON

    Details

      Description

      Currently the journal log has entries like below. At times while debugging crash or some issue we need to determine the probable root state at some point in the past.

      3dea11bb-bd43-4319-a37d-59df778a7271:260988 root
      a7a509ac-a9d4-4e2c-a0d8-df71ebe123a0:259736 root
      1d889da9-b41c-4889-a0cd-a9aa9dcc1737:259992 root
      b78e4aa6-ec68-4e70-a364-f04ccbf4c3b3:259964 root
      

      Currently there is no way to determine from above log what is the root state wrt time. So we need to workaround that by reading each root state and look for some path which has some time related property. To simplify such case it would be helpful to also include timestamp while adding a journal entry

      1d889da9-b41c-4889-a0cd-a9aa9dcc1737:259992 root 1457408708772
      b78e4aa6-ec68-4e70-a364-f04ccbf4c3b3:259964 root 1457408708899
      

      Key points

      1. Timestamp comes at end
      2. Such a feature can be enabled without affecting backward compatibility - Just that new entries would have timestamp included
      3. JournalReader - Just reads the first column so would work as is

        Attachments

        1. OAK-4095.patch
          5 kB
          Chetan Mehrotra

          Issue Links

            Activity

              People

              • Assignee:
                chetanm Chetan Mehrotra
                Reporter:
                chetanm Chetan Mehrotra
              • Votes:
                0 Vote for this issue
                Watchers:
                2 Start watching this issue

                Dates

                • Created:
                  Updated:
                  Resolved: