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https://issues.apache.org/jira/browse/HIVE-8267?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14151623#comment-14151623
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Muhammad Ehsan ul Haque commented on HIVE-8267:
-----------------------------------------------
My bad I just copy pasted from HIVE-2828 description (Originated from HIVE-2781
and not accepted, but I think this could be helpful to someone). However there
is one more HIVE-2306 still open, no patch available.
Hive-2828, has failing test after 2.5 year rebase. Also exposes timestamp by
picking the timestamp of the first cell only.
{code}
long timestamp = result.rawCells()[0].getTimestamp();
{code}
Does not allow to expose timestamp of all or particular cells in some column
families.
> Exposing hbase cell latest timestamp through hbase columns mappings to hive
> columns.
> ------------------------------------------------------------------------------------
>
> Key: HIVE-8267
> URL: https://issues.apache.org/jira/browse/HIVE-8267
> Project: Hive
> Issue Type: New Feature
> Components: HBase Handler
> Affects Versions: 0.14.0
> Reporter: Muhammad Ehsan ul Haque
> Priority: Minor
> Fix For: 0.14.0
>
> Attachments: HIVE-8267.0.patch
>
>
> Previous attempts HIVE-2781 (not accepted), HIVE-2828 (broken and proposed
> with restricted feature).
> The feature is to have hbase cell latest timestamp accessible in hive query,
> by mapping the cell timestamp with a hive column, using mapping format like
> {code}:timestamp:cf:[optional qualifier or qualifier prefix]{code}
> The hive create table statement would be like
> h4. For mapping a cell latest timestamp.
> {code}
> CREATE TABLE hive_hbase_table (key STRING, col1 STRING, col1_ts BIGINT)
> STORED BY 'org.apache.hadoop.hive.hbase.HBaseStorageHandler'
> WITH SERDEPROPERTIES ("hbase.columns.mapping" = ":key,cf:qualifier,
> :timestamp:cf:qualifier")
> TBLPROPERTIES ("hbase.table.name" = "hbase_table");
> {code}
> h4. For mapping a column family latest timestamp.
> {code}
> CREATE TABLE hive_hbase_table (key STRING, valuemap MAP<STRING, STRING>,
> timestampmap MAP<STRING, BIGINT>)
> STORED BY 'org.apache.hadoop.hive.hbase.HBaseStorageHandler'
> WITH SERDEPROPERTIES ("hbase.columns.mapping" = ":key,cf:,:timestamp:cf:")
> TBLPROPERTIES ("hbase.table.name" = "hbase_table");
> {code}
> h4. Providing default cell value
> {code}
> CREATE TABLE hive_hbase_table(key int, value string, value_timestamp bigint)
> STORED BY 'org.apache.hadoop.hive.hbase.HBaseStorageHandler'
> WITH SERDEPROPERTIES ("hbase.columns.mapping" = "cf:qualifier,
> :timestamp:cf:qualifier",
> "hbase.put.default.cell.value" = "default value")
> TBLPROPERTIES ("hbase.table.name" = "hbase_table");
> {code}
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