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Date: Fri, 22 Jan 2010 18:16:23 +0000 (UTC)
From: "Jean-Daniel Cryans (JIRA)" <jira@apache.org>
To: hbase-dev@hadoop.apache.org
Subject: [jira] Commented: (HBASE-2157) LATEST_TIMESTAMP not replaced by
 current timestamp in KeyValue
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    [ https://issues.apache.org/jira/browse/HBASE-2157?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12803800#action_12803800 ] 

Jean-Daniel Cryans commented on HBASE-2157:
-------------------------------------------

Right the replacement is done in the region server and in this case it gets bypassed. 

> LATEST_TIMESTAMP not replaced by current timestamp in KeyValue
> --------------------------------------------------------------
>
>                 Key: HBASE-2157
>                 URL: https://issues.apache.org/jira/browse/HBASE-2157
>             Project: Hadoop HBase
>          Issue Type: Bug
>    Affects Versions: 0.20.2
>         Environment: Hadoop 0.20.0 - Hbase 0.20.2 - Java(TM) SE Runtime Environment (build 1.6.0_17-b04)
>            Reporter: Menno Luiten
>
> I was trying to bulk load using the new HFileOutputFormat. When using a MapReduce in which map generates {{KeyValue}}s and reduce is equal to KeyValueSortReducer, and using the constructor using (byte[] row, byte[] family, byte[] qualifier, byte[] value), the (undefined) timestamp was inserted as HConstants.LATEST_TIMESTAMP/Long.MAX_VALUE into HBase. This causes all kinds of troubles, but most importantly, while the records were in the table, other MapReduces (using TableInputFormat) and Hbase shell's 'get'-command did not fetch them. Guess there is some sort of filtering of future dates.
> As I understood from St.Ack, the LASTEST_TIMESTAMP is supposed to be replaced by System.currentTimeMillis(), but I don't see this reflected in the code of KeyValue, and apparently it did not happen elsewhere; perhaps because there is no actual HBase connection?

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