Uploaded image for project: 'Hadoop Common'
  1. Hadoop Common
  2. HADOOP-17358

Improve excessive reloading of Configurations

    XMLWordPrintableJSON

Details

    Description

      daryn reported that adding a new resource to a conf forces a complete reload of the conf instead of just loading the new resource. Instantiating a SSLFactory adds a new resource for the ssl client/server file. Formerly only the KMS client used the SSLFactory but now TLS/RPC uses it too.

      The reload is so costly that RM token cancellation falls behind by hours or days. The accumulation of uncancelled tokens in the KMS rose from a few thousand to hundreds of thousands which risks ZK scalability issues causing a KMS outage.

      Attachments

        Activity

          People

            ahussein Ahmed Hussein
            ahussein Ahmed Hussein
            Votes:
            0 Vote for this issue
            Watchers:
            5 Start watching this issue

            Dates

              Created:
              Updated:
              Resolved:

              Time Tracking

                Estimated:
                Original Estimate - Not Specified
                Not Specified
                Remaining:
                Remaining Estimate - 0h
                0h
                Logged:
                Time Spent - 2.5h
                2.5h