Charlie Qiangeng Xu created HBASE-16626:
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Summary: User customized RegionScanner from 1.X is incompatible in
2.0.0's off heap part
Key: HBASE-16626
URL: https://issues.apache.org/jira/browse/HBASE-16626
Project: HBase
Issue Type: Sub-task
Components: Offheaping
Affects Versions: 1.1.6, 1.2.2
Reporter: Charlie Qiangeng Xu
Fix For: 2.0.0
Introduced by 2.0.0's off-heap feature, the interface RegionScanner extends a
new interface Shipper which contains a "shipped()" method.
In our case, some application user defined customized scanner that
implements Interface RegionScanner in 1.X . After we back ported the Off Heap
feature of 2.0.0, RegionScannerShippedCallBack throws a
"java.lang.AbstractMethodError" when executing scanner.shipped();
Instead of forcing every one of our users to add a empty implementation(if they
don't really need to scan the file or the RS don't use L2 cache) , adding a
default method of shipped might be a better way.(since HBASE-15624 we decide to
use JAVA8 only in 2.0.0)
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