[HDFS-9607] Advance Hybrid Cloud Architecture (AHA) - HDFS Update (write-in-place)

• Type: New Feature
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Assignee: Unassigned
• Reporter: Dinesh S. Atreya
• Created: 03/Jan/16 17:59
• Updated: 07/Nov/20 04:20

Description

Link to Umbrella JIRA
https://issues.apache.org/jira/browse/HADOOP-12620
Provide capability to carry out in-place writes/updates. Only writes in-place are supported where the existing length does not change.
For example, "Hello World" can be replaced by "Hello HDFS!"
See https://issues.apache.org/jira/browse/HADOOP-12620?focusedCommentId=15046300&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-15046300 for more details.

Currently following are supported.

1. Sequential writes
2. Append (HADOOP-1700, HDFS-265)
3. Snapshots (HDFS-2802)
4. Truncate (HDFS-3107)

This JIRA is for random updates (write-in-place) within the broad initiative:

Advance Hadoop Architecture (AHA) / Advance Hadoop Adaptabilities (AHA) /

Advance Hybrid Cloud Architecture (AHA)

.

 

 

Issue Links

• blocks: HADOOP-12620 Advanced Hybrid Cloud Architecture (AHA) - Common
• is depended upon by: HBASE-15273 Advance Hybrid Cloud Architecture (AHA) - Advance HBase (Umbrella) JIRA
• is depended upon by: HIVE-13061 Advance Hybrid Cloud Architecture (AHA) - Advance Hive (Umbrella) JIRA -- Enhanced Updates & others
• is depended upon by: ORC-42 Advance Hybrid Cloud Architecture (AHA) - Advance ORC (Umbrella) JIRA
• relates to: HDFS-9814 Advance Hybrid Cloud Architecture (AHA) - HDFS Block Level Leases (Locks)