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https://issues.apache.org/jira/browse/HBASE-910?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Clint Morgan updated HBASE-910:
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Attachment: hbase-910.patch
patch to provoke the issue. The relevant piece of the log is:
2008-10-01 13:25:32,728 INFO
org.apache.hadoop.hbase.TestScannerWhileMemcacheFlush: got scanner
2008-10-01 13:25:32,792 INFO
org.apache.hadoop.hbase.TestScannerWhileMemcacheFlush: got scanner
2008-10-01 13:25:32,856 DEBUG org.apache.hadoop.hbase.regionserver.HRegion:
Started memcache flush for region table,,1222892721305. Current region memcache
size 25.3k
2008-10-01 13:25:32,857 INFO
org.apache.hadoop.hbase.TestScannerWhileMemcacheFlush: got scanner
2008-10-01 13:25:32,995 DEBUG org.apache.hadoop.hbase.regionserver.HStore:
Added /user/clint.morgan/table/215004990/family/mapfiles/2754371528337048417
with 1000 entries, sequence id 1012, data size 25.3k, file size 39.4k
2008-10-01 13:25:32,996 DEBUG org.apache.hadoop.hbase.regionserver.HRegion:
Finished memcache flush for region table,,1222892721305 in 141ms, sequence
id=1012, compaction requested=false
2008-10-01 13:25:32,997 WARN
org.apache.hadoop.hbase.TestScannerWhileMemcacheFlush: Failing assert
> Scanner misses columns / rows when the scanner is obtained durring a memcache
> flush
> -----------------------------------------------------------------------------------
>
> Key: HBASE-910
> URL: https://issues.apache.org/jira/browse/HBASE-910
> Project: Hadoop HBase
> Issue Type: Bug
> Components: regionserver
> Environment: latest trunk
> Reporter: Clint Morgan
> Priority: Critical
> Attachments: hbase-910.patch
>
>
> I first noticed that some columns for a row were missing if they are coming
> from a scanner that was obtained while a memecache flush on the region was in
> progress. I tried to write a simple unit test to reproduce, however the
> problem I get in the unit test is that some rows are being missed.
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