[HBASE-20219] An error occurs when scanning with reversed=true and loadColumnFamiliesOnDemand=true

• Type: Bug
• Status: Resolved
• Priority: Critical
• Resolution: Fixed
• Fix Version/s: 2.0.0
• Component/s: phoenix
• Hadoop Flags: Reviewed
• Release Note: Throws DoNotRetryIOException when you ask for a reverse scan loading adjacent column families on demand. Previous it threw IllegalStateException
• Assignee: Toshihiro Suzuki
• Reporter: Toshihiro Suzuki
• Created: 19/Mar/18 03:06
• Updated: 01/Aug/18 06:20
• Resolved: 11/Apr/18 19:30

Description

I'm facing the following error when scanning with reversed=true and loadColumnFamiliesOnDemand=true:

java.lang.IllegalStateException: requestSeek cannot be called on ReversedKeyValueHeap
	at org.apache.hadoop.hbase.regionserver.ReversedKeyValueHeap.requestSeek(ReversedKeyValueHeap.java:66)
	at org.apache.hadoop.hbase.regionserver.HRegion$RegionScannerImpl.joinedHeapMayHaveData(HRegion.java:6725)
	at org.apache.hadoop.hbase.regionserver.HRegion$RegionScannerImpl.nextInternal(HRegion.java:6652)
	at org.apache.hadoop.hbase.regionserver.HRegion$RegionScannerImpl.nextRaw(HRegion.java:6364)
	at org.apache.hadoop.hbase.regionserver.RSRpcServices.scan(RSRpcServices.java:3108)
	at org.apache.hadoop.hbase.regionserver.RSRpcServices.scan(RSRpcServices.java:3345)
	at org.apache.hadoop.hbase.shaded.protobuf.generated.ClientProtos$ClientService$2.callBlockingMethod(ClientProtos.java:41548)
	at org.apache.hadoop.hbase.ipc.RpcServer.call(RpcServer.java:409)
	at org.apache.hadoop.hbase.ipc.CallRunner.run(CallRunner.java:130)
	at org.apache.hadoop.hbase.ipc.RpcExecutor$Handler.run(RpcExecutor.java:324)
	at org.apache.hadoop.hbase.ipc.RpcExecutor$Handler.run(RpcExecutor.java:304)

I will attach a UT patch to reproduce this issue.

Issue Links

• relates to: PHOENIX-4658 IllegalStateException: requestSeek cannot be called on ReversedKeyValueHeap