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Posted to issues@hbase.apache.org by "Lars Hofhansl (JIRA)" <ji...@apache.org> on 2012/08/15 02:34:38 UTC
[jira] [Updated] (HBASE-6579) Unnecessary KV order check in
StoreScanner
[ https://issues.apache.org/jira/browse/HBASE-6579?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Lars Hofhansl updated HBASE-6579:
---------------------------------
Attachment: 6579.txt
Replaces the check with an assert
> Unnecessary KV order check in StoreScanner
> ------------------------------------------
>
> Key: HBASE-6579
> URL: https://issues.apache.org/jira/browse/HBASE-6579
> Project: HBase
> Issue Type: Bug
> Reporter: Lars Hofhansl
> Priority: Minor
> Fix For: 0.96.0, 0.94.2
>
> Attachments: 6579.txt
>
>
> In StoreScanner.next(List<KeyValue>, int, String) I find this code:
> {code}
> // Check that the heap gives us KVs in an increasing order.
> if (prevKV != null && comparator != null
> && comparator.compare(prevKV, kv) > 0) {
> throw new IOException("Key " + prevKV + " followed by a " +
> "smaller key " + kv + " in cf " + store);
> }
> prevKV = kv;
> {code}
> So this checks for bugs in the HFiles or the scanner code. It needs to compare each KVs with its predecessor. This seems unnecessary now, I propose that we remove this.
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