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https://issues.apache.org/jira/browse/HBASE-6380?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13412725#comment-13412725
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Jie Huang commented on HBASE-6380:
----------------------------------
We found that action of force-split on certain table (after bulkloading)
failed, and we can see following debug log
{noformat}
DEBUG org.apache.hadoop.hbase.regionserver.CompactSplitThread: Region
t1,,1342088772367.767829f873354d78a742084c22f47895. not splittable because
midkey=null
{noformat}
But actually we can get the non-empty midkey value in getSplitPoint() function.
The only reason is that the storeSize and largestStoreSize are zero, which
makes the splitPointFromLargetStore returned with NULL (its initial value).
{noformat}
byte[] splitPointFromLargestStore = null;
long largestStoreSize = 0;
for (Store s : stores.values()) {
byte[] splitPoint = s.getSplitPoint();
long storeSize = s.getSize();
if (splitPoint != null && largestStoreSize < storeSize) {
splitPointFromLargestStore = splitPoint;
largestStoreSize = storeSize;
}
}
return splitPointFromLargestStore;
{noformat}
The simple solution is to update the store's size in the bulkload() function.
After applied attached patch, the problem is solved.
> bulkload should update the store.storeSize
> ------------------------------------------
>
> Key: HBASE-6380
> URL: https://issues.apache.org/jira/browse/HBASE-6380
> Project: HBase
> Issue Type: Bug
> Components: regionserver
> Affects Versions: 0.94.0, 0.96.0
> Reporter: Jie Huang
> Priority: Critical
> Attachments: hbase-6380_0_94_0.patch
>
>
> After bulkloading some HFiles into the Table, we found the force-split didn't
> work because of the MidKey == NULL. Only if we re-booted the HBase service,
> the force-split can work normally.
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