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  1. Hadoop Common
  2. HADOOP-4539

Streaming Edits to a Backup Node.

          Details

          • Type: New Feature
          • Status: Closed
          • Priority: Major
          • Resolution: Fixed
          • Affects Version/s: None
          • Fix Version/s: 0.21.0
          • Component/s: None
          • Labels:
            None
          • Hadoop Flags:
            Incompatible change, Reviewed
          • Release Note:
            Introduced backup node which maintains the up-to-date state of the namespace by receiving edits from the namenode, and checkpoint node, which creates checkpoints of the name space. These facilities replace the secondary namenode.

            Description

            Currently Secondary name-node acts as mere checkpointer.
            Secondary name-node should be transformed into a standby name-node (SNN).
            The long term goal is to make it a warm standby.
            The purpose of this issue is to provide real time streaming of edits to SNN so that it contained the up-to-date namespace state.

              Attachments

              1. StreamEditsToSNN.htm
                31 kB
                Konstantin Shvachko
              2. StreamEditsToBN.pdf
                67 kB
                Konstantin Shvachko
              3. image001.gif
                8 kB
                Konstantin Shvachko
              4. BackupNode.patch
                163 kB
                Konstantin Shvachko
              5. BackupNode.patch
                177 kB
                Konstantin Shvachko
              6. BackupNode.patch
                177 kB
                Konstantin Shvachko
              7. BackupNode.patch
                183 kB
                Konstantin Shvachko
              8. BackupNode.patch
                183 kB
                Konstantin Shvachko
              9. BackupNode.patch
                183 kB
                Konstantin Shvachko

                Issue Links

                incorporates

                Bug - A problem which impairs or prevents the functions of the product. HADOOP-5511 Add Apache License to EditLogBackupOutputStream

                • Major - Major loss of function.
                • Closed
                is blocked by

                Bug - A problem which impairs or prevents the functions of the product. HADOOP-2337 Trash never closes FileSystem

                • Major - Major loss of function.
                • Closed
                is related to

                Bug - A problem which impairs or prevents the functions of the product. HDFS-1572 Checkpointer should trigger checkpoint with specified period.

                • Blocker - Blocks development and/or testing work, production could not run
                • Closed

                Improvement - An improvement or enhancement to an existing feature or task. HDFS-1583 Improve backup-node sync performance by wrapping RPC parameters

                • Major - Major loss of function.
                • Resolved
                relates to

                Sub-task - The sub-task of the issue HADOOP-5119 FSEditLog should not use FSNamesystem.getFSNamesystem()

                • Major - Major loss of function.
                • Closed

                Sub-task - The sub-task of the issue HADOOP-5559 BackupStorage should not use FSNamesystem.getFSNamesystem()

                • Major - Major loss of function.
                • Closed

                Sub-task - The sub-task of the issue HBASE-2098 [EC2] Build a HA cluster

                • Minor - Minor loss of function, or other problem where easy workaround is present.
                • Closed

                Bug - A problem which impairs or prevents the functions of the product. HDFS-192 TestBackupNode sometimes fails

                • Major - Major loss of function.
                • Closed

                Improvement - An improvement or enhancement to an existing feature or task. HDFS-311 Modifications to enable multiple types of logging

                • Major - Major loss of function.
                • Resolved

                Improvement - An improvement or enhancement to an existing feature or task. HADOOP-5502 Backup and checkpoint nodes should be documented

                • Major - Major loss of function.
                • Closed

                  Activity

                    People

                    • Assignee:
                      shv Konstantin Shvachko
                      Reporter:
                      shv Konstantin Shvachko
                    • Votes:
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                      Watchers:
                      32 Start watching this issue

                      Dates

                      • Created:
                        Updated:
                        Resolved: