Feng Honghua created HBASE-8721: ----------------------------------- Summary: fix for bug that delete can mask puts that happened after the delete was entered Key: HBASE-8721 URL: https://issues.apache.org/jira/browse/HBASE-8721 Project: HBase Issue Type: Bug Components: regionserver Reporter: Feng Honghua
this fix aims for bug mentioned in http://hbase.apache.org/book.html 5.8.2.1: "Deletes mask puts, even puts that happened after the delete was entered. Remember that a delete writes a tombstone, which only disappears after then next major compaction has run. Suppose you do a delete of everything <= T. After this you do a new put with a timestamp <= T. This put, even if it happened after the delete, will be masked by the delete tombstone. Performing the put will not fail, but when you do a get you will notice the put did have no effect. It will start working again after the major compaction has run. These issues should not be a problem if you use always-increasing versions for new puts to a row. But they can occur even if you do not care about time: just do delete and put immediately after each other, and there is some chance they happen within the same millisecond." -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators For more information on JIRA, see: http://www.atlassian.com/software/jira