Ted Yu created HBASE-20879:
------------------------------

             Summary: Compacting memstore config should handle lower case
                 Key: HBASE-20879
                 URL: https://issues.apache.org/jira/browse/HBASE-20879
             Project: HBase
          Issue Type: Bug
    Affects Versions: 2.0.1
            Reporter: Tushar Sharma
            Assignee: Ted Yu


Tushar reported seeing the following in region server log when entering 'basic' 
for compacting memstore type:
{code}
2018-07-10 19:43:45,944 ERROR [RS_OPEN_REGION-regionserver/c01s22:16020-0] 
handler.OpenRegionHandler: Failed open of 
region=usertable,user6379,1531182972304.69abd81a44e9cc3ef9e150709f4f69ab., 
starting to roll back the global memstore size.
java.io.IOException: java.lang.IllegalArgumentException: No enum constant 
org.apache.hadoop.hbase.MemoryCompactionPolicy.basic
        at 
org.apache.hadoop.hbase.regionserver.HRegion.initializeStores(HRegion.java:1035)
        at 
org.apache.hadoop.hbase.regionserver.HRegion.initializeRegionInternals(HRegion.java:900)
        at 
org.apache.hadoop.hbase.regionserver.HRegion.initialize(HRegion.java:872)
        at 
org.apache.hadoop.hbase.regionserver.HRegion.openHRegion(HRegion.java:7048)
        at 
org.apache.hadoop.hbase.regionserver.HRegion.openHRegion(HRegion.java:7006)
        at 
org.apache.hadoop.hbase.regionserver.HRegion.openHRegion(HRegion.java:6977)
        at 
org.apache.hadoop.hbase.regionserver.HRegion.openHRegion(HRegion.java:6933)
        at 
org.apache.hadoop.hbase.regionserver.HRegion.openHRegion(HRegion.java:6884)
        at 
org.apache.hadoop.hbase.regionserver.handler.OpenRegionHandler.openRegion(OpenRegionHandler.java:284)
        at 
org.apache.hadoop.hbase.regionserver.handler.OpenRegionHandler.process(OpenRegionHandler.java:109)
        at 
org.apache.hadoop.hbase.executor.EventHandler.run(EventHandler.java:104)
        at 
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
        at 
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
        at java.lang.Thread.run(Thread.java:748)
Caused by: java.lang.IllegalArgumentException: No enum constant 
org.apache.hadoop.hbase.MemoryCompactionPolicy.basic
        at java.lang.Enum.valueOf(Enum.java:238)
        at 
org.apache.hadoop.hbase.MemoryCompactionPolicy.valueOf(MemoryCompactionPolicy.java:26)
        at 
org.apache.hadoop.hbase.regionserver.HStore.getMemstore(HStore.java:331)
        at org.apache.hadoop.hbase.regionserver.HStore.<init>(HStore.java:271)
        at 
org.apache.hadoop.hbase.regionserver.HRegion.instantiateHStore(HRegion.java:5531)
        at org.apache.hadoop.hbase.regionserver.HRegion$1.call(HRegion.java:999)
        at org.apache.hadoop.hbase.regionserver.HRegion$1.call(HRegion.java:996)
        at java.util.concurrent.FutureTask.run(FutureTask.java:266)
        at 
java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
        at java.util.concurrent.FutureTask.run(FutureTask.java:266)
        ... 3 more
2018-07-10 19:43:45,944 ERROR [RS_OPEN_REGION-regionserver/c01s22:16020-1] 
handler.OpenRegionHandler: Failed open of 
region=temp,,1530511278693.0be48eedc68b9358aa475946d00571f1., starting to roll 
back the global memstore size.
java.io.IOException: java.lang.IllegalArgumentException: No enum constant 
org.apache.hadoop.hbase.MemoryCompactionPolicy.basic
        at 
org.apache.hadoop.hbase.regionserver.HRegion.initializeStores(HRegion.java:1035)
        at 
org.apache.hadoop.hbase.regionserver.HRegion.initializeRegionInternals(HRegion.java:900)
        at 
org.apache.hadoop.hbase.regionserver.HRegion.initialize(HRegion.java:872)
        at 
org.apache.hadoop.hbase.regionserver.HRegion.openHRegion(HRegion.java:7048)
        at 
org.apache.hadoop.hbase.regionserver.HRegion.openHRegion(HRegion.java:7006)
        at 
org.apache.hadoop.hbase.regionserver.HRegion.openHRegion(HRegion.java:6977)
        at 
org.apache.hadoop.hbase.regionserver.HRegion.openHRegion(HRegion.java:6933)
        at 
org.apache.hadoop.hbase.regionserver.HRegion.openHRegion(HRegion.java:6884)
        at 
org.apache.hadoop.hbase.regionserver.handler.OpenRegionHandler.openRegion(OpenRegionHandler.java:284)
        at 
org.apache.hadoop.hbase.regionserver.handler.OpenRegionHandler.process(OpenRegionHandler.java:109)
        at 
org.apache.hadoop.hbase.executor.EventHandler.run(EventHandler.java:104)
        at 
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
        at 
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
        at java.lang.Thread.run(Thread.java:748)
Caused by: java.lang.IllegalArgumentException: No enum constant 
org.apache.hadoop.hbase.MemoryCompactionPolicy.basic
        at java.lang.Enum.valueOf(Enum.java:238)
        at 
org.apache.hadoop.hbase.MemoryCompactionPolicy.valueOf(MemoryCompactionPolicy.java:26)
        at 
org.apache.hadoop.hbase.regionserver.HStore.getMemstore(HStore.java:331)
        at org.apache.hadoop.hbase.regionserver.HStore.<init>(HStore.java:271)
        at 
org.apache.hadoop.hbase.regionserver.HRegion.instantiateHStore(HRegion.java:5531)
        at org.apache.hadoop.hbase.regionserver.HRegion$1.call(HRegion.java:999)
        at org.apache.hadoop.hbase.regionserver.HRegion$1.call(HRegion.java:996)
        at java.util.concurrent.FutureTask.run(FutureTask.java:266)
{code}
When loading the config, we should handle lower case specification.



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