Liu Shaohui created HBASE-10535:
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Summary: Table trash to recover table deleted by mistake
Key: HBASE-10535
URL: https://issues.apache.org/jira/browse/HBASE-10535
Project: HBase
Issue Type: Improvement
Reporter: Liu Shaohui
Priority: Minor
When table is deleted, only Hfiles are moved to archives dir, table and region
infos are deleted immediately. So it's very difficult to recover tables which
are deleted by mistakes.
I think if we can introduce an table trash dir in HDFS. When the table is
deleted, the entire table dir is moved to trash dir. And after an configurable
ttl, the dir is deleted actually. This can be done by HMaster.
If we want to recover the deleted table, we can use a tool which moves table
dir out of trash and recovery the meta data of the table. There are many
problems the recover tool will encountered eg, parent and daughter regions are
all in the table dir. But I think this feature is useful to handle some special
cases.
Discussions are welcomed.
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