[ 
https://issues.apache.org/jira/browse/HBASE-28812?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

Ke Han updated HBASE-28812:
---------------------------
    Description: 
I am trying to upgrade from 2.6.0 (stable release) to 3.0.0. I built 3.0.0 
using the following commit (a030e8099840e640684a68b6e4a79e7c1d5a6823)
{code:java}
commit a030e8099840e640684a68b6e4a79e7c1d5a6823 (HEAD -> branch-3, 
upstream/branch-3)
Author: Ray Mattingly <[email protected]>
Date:   Mon Sep 2 04:38:29 2024 -0400    HBASE-28697 Don't clean bulk load 
system entries until backup is complete (#6089)
    
    Co-authored-by: Ray Mattingly <[email protected]>
{code}
However, the HMaster would crash during the upgrade process.
h1. Reproduce

Step1: Start up 2.6.0 cluster (1 HDFS, 1 HM, 1 RS)

Step2: Stop the entire cluster

Step3: Upgrade to 3.0.0 cluster.

HMaster will crash with the following error message
{code:java}
2024-09-04T04:29:18,917 WARN  [master/hmaster:16000:becomeActiveMaster] 
regionserver.HRegion: Failed initialize of region= 
master:store,,1.1595e783b53d99cd5eef43b6debb2682., starting to roll back 
memstore
java.io.IOException: java.io.IOException: 
org.apache.hadoop.hbase.io.hfile.CorruptHFileException: Problem reading HFile 
Trailer from file 
hdfs://master:8020/hbase/MasterData/data/master/store/1595e783b53d99cd5eef43b6debb2682/info/82c6d244b6244c179cdbafcead00ed75
        at 
org.apache.hadoop.hbase.regionserver.HRegion.initializeStores(HRegion.java:1215)
 ~[hbase-server-3.0.0-beta-2-SNAPSHOT.jar:3.0.0-beta-2-SNAPSHOT]
        at 
org.apache.hadoop.hbase.regionserver.HRegion.initializeStores(HRegion.java:1158)
 ~[hbase-server-3.0.0-beta-2-SNAPSHOT.jar:3.0.0-beta-2-SNAPSHOT]
        at 
org.apache.hadoop.hbase.regionserver.HRegion.initializeRegionInternals(HRegion.java:1030)
 ~[hbase-server-3.0.0-beta-2-SNAPSHOT.jar:3.0.0-beta-2-SNAPSHOT]
        at 
org.apache.hadoop.hbase.regionserver.HRegion.initialize(HRegion.java:974) 
~[hbase-server-3.0.0-beta-2-SNAPSHOT.jar:3.0.0-beta-2-SNAPSHOT]
        at 
org.apache.hadoop.hbase.regionserver.HRegion.openHRegion(HRegion.java:7794) 
~[hbase-server-3.0.0-beta-2-SNAPSHOT.jar:3.0.0-beta-2-SNAPSHOT]
        at 
org.apache.hadoop.hbase.regionserver.HRegion.openHRegionFromTableDir(HRegion.java:7749)
 ~[hbase-server-3.0.0-beta-2-SNAPSHOT.jar:3.0.0-beta-2-SNAPSHOT]
        at 
org.apache.hadoop.hbase.master.region.MasterRegion.open(MasterRegion.java:277) 
~[hbase-server-3.0.0-beta-2-SNAPSHOT.jar:3.0.0-beta-2-SNAPSHOT]
        at 
org.apache.hadoop.hbase.master.region.MasterRegion.create(MasterRegion.java:432)
 ~[hbase-server-3.0.0-beta-2-SNAPSHOT.jar:3.0.0-beta-2-SNAPSHOT]
        at 
org.apache.hadoop.hbase.master.region.MasterRegionFactory.create(MasterRegionFactory.java:135)
 ~[hbase-server-3.0.0-beta-2-SNAPSHOT.jar:3.0.0-beta-2-SNAPSHOT]
        at 
org.apache.hadoop.hbase.master.HMaster.finishActiveMasterInitialization(HMaster.java:1003)
 ~[hbase-server-3.0.0-beta-2-SNAPSHOT.jar:3.0.0-beta-2-SNAPSHOT]
        at 
org.apache.hadoop.hbase.master.HMaster.startActiveMasterManager(HMaster.java:2524)
 ~[hbase-server-3.0.0-beta-2-SNAPSHOT.jar:3.0.0-beta-2-SNAPSHOT]
        at 
org.apache.hadoop.hbase.master.HMaster.lambda$run$0(HMaster.java:613) 
~[hbase-server-3.0.0-beta-2-SNAPSHOT.jar:3.0.0-beta-2-SNAPSHOT]
        at 
org.apache.hadoop.hbase.trace.TraceUtil.lambda$tracedRunnable$2(TraceUtil.java:155)
 ~[hbase-common-3.0.0-beta-2-SNAPSHOT.jar:3.0.0-beta-2-SNAPSHOT]
        at java.lang.Thread.run(Thread.java:833) ~[?:?]
Caused by: java.io.IOException: 
org.apache.hadoop.hbase.io.hfile.CorruptHFileException: Problem reading HFile 
Trailer from file 
hdfs://master:8020/hbase/MasterData/data/master/store/1595e783b53d99cd5eef43b6debb2682/info/82c6d244b6244c179cdbafcead00ed75
        at 
org.apache.hadoop.hbase.regionserver.StoreEngine.openStoreFiles(StoreEngine.java:289)
 ~[hbase-server-3.0.0-beta-2-SNAPSHOT.jar:3.0.0-beta-2-SNAPSHOT]
        at 
org.apache.hadoop.hbase.regionserver.StoreEngine.initialize(StoreEngine.java:339)
 ~[hbase-server-3.0.0-beta-2-SNAPSHOT.jar:3.0.0-beta-2-SNAPSHOT]
        at org.apache.hadoop.hbase.regionserver.HStore.<init>(HStore.java:301) 
~[hbase-server-3.0.0-beta-2-SNAPSHOT.jar:3.0.0-beta-2-SNAPSHOT]
        at 
org.apache.hadoop.hbase.regionserver.HRegion.instantiateHStore(HRegion.java:6924)
 ~[hbase-server-3.0.0-beta-2-SNAPSHOT.jar:3.0.0-beta-2-SNAPSHOT]
        at 
org.apache.hadoop.hbase.regionserver.HRegion$1.call(HRegion.java:1181) 
~[hbase-server-3.0.0-beta-2-SNAPSHOT.jar:3.0.0-beta-2-SNAPSHOT]
        at 
org.apache.hadoop.hbase.regionserver.HRegion$1.call(HRegion.java:1178) 
~[hbase-server-3.0.0-beta-2-SNAPSHOT.jar:3.0.0-beta-2-SNAPSHOT]
        at java.util.concurrent.FutureTask.run(FutureTask.java:264) ~[?:?]
        at 
java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:539) ~[?:?]
        at java.util.concurrent.FutureTask.run(FutureTask.java:264) ~[?:?]
        at 
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1136) 
~[?:?]
        at 
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635) 
~[?:?]
        ... 1 more
Caused by: org.apache.hadoop.hbase.io.hfile.CorruptHFileException: Problem 
reading HFile Trailer from file 
hdfs://master:8020/hbase/MasterData/data/master/store/1595e783b53d99cd5eef43b6debb2682/info/82c6d244b6244c179cdbafcead00ed75
        at 
org.apache.hadoop.hbase.io.hfile.HFileInfo.initTrailerAndContext(HFileInfo.java:359)
 ~[hbase-server-3.0.0-beta-2-SNAPSHOT.jar:3.0.0-beta-2-SNAPSHOT]
        at 
org.apache.hadoop.hbase.io.hfile.HFileInfo.<init>(HFileInfo.java:132) 
~[hbase-server-3.0.0-beta-2-SNAPSHOT.jar:3.0.0-beta-2-SNAPSHOT]
        at 
org.apache.hadoop.hbase.regionserver.StoreFileInfo.initHFileInfo(StoreFileInfo.java:763)
 ~[hbase-server-3.0.0-beta-2-SNAPSHOT.jar:3.0.0-beta-2-SNAPSHOT]
        at 
org.apache.hadoop.hbase.regionserver.HStoreFile.open(HStoreFile.java:395) 
~[hbase-server-3.0.0-beta-2-SNAPSHOT.jar:3.0.0-beta-2-SNAPSHOT]
        at 
org.apache.hadoop.hbase.regionserver.HStoreFile.initReader(HStoreFile.java:524) 
~[hbase-server-3.0.0-beta-2-SNAPSHOT.jar:3.0.0-beta-2-SNAPSHOT]
        at 
org.apache.hadoop.hbase.regionserver.StoreEngine.createStoreFileAndReader(StoreEngine.java:226)
 ~[hbase-server-3.0.0-beta-2-SNAPSHOT.jar:3.0.0-beta-2-SNAPSHOT]
        at 
org.apache.hadoop.hbase.regionserver.StoreEngine.lambda$openStoreFiles$0(StoreEngine.java:267)
 ~[hbase-server-3.0.0-beta-2-SNAPSHOT.jar:3.0.0-beta-2-SNAPSHOT]
        at java.util.concurrent.FutureTask.run(FutureTask.java:264) ~[?:?]
        at 
java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:539) ~[?:?]
        at java.util.concurrent.FutureTask.run(FutureTask.java:264) ~[?:?]
        at 
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1136) 
~[?:?]
        at 
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635) 
~[?:?]
        ... 1 more
Caused by: java.io.IOException: java.lang.ClassNotFoundException: 
org.apache.hadoop.hbase.KeyValue$KVComparator
        at 
org.apache.hadoop.hbase.io.hfile.FixedFileTrailer.getComparatorClass(FixedFileTrailer.java:578)
 ~[hbase-server-3.0.0-beta-2-SNAPSHOT.jar:3.0.0-beta-2-SNAPSHOT]
        at 
org.apache.hadoop.hbase.io.hfile.FixedFileTrailer.deserializeFromPB(FixedFileTrailer.java:304)
 ~[hbase-server-3.0.0-beta-2-SNAPSHOT.jar:3.0.0-beta-2-SNAPSHOT]
        at 
org.apache.hadoop.hbase.io.hfile.FixedFileTrailer.deserialize(FixedFileTrailer.java:250)
 ~[hbase-server-3.0.0-beta-2-SNAPSHOT.jar:3.0.0-beta-2-SNAPSHOT]
        at 
org.apache.hadoop.hbase.io.hfile.FixedFileTrailer.readFromStream(FixedFileTrailer.java:407)
 ~[hbase-server-3.0.0-beta-2-SNAPSHOT.jar:3.0.0-beta-2-SNAPSHOT]
        at 
org.apache.hadoop.hbase.io.hfile.HFileInfo.initTrailerAndContext(HFileInfo.java:349)
 ~[hbase-server-3.0.0-beta-2-SNAPSHOT.jar:3.0.0-beta-2-SNAPSHOT]
        at 
org.apache.hadoop.hbase.io.hfile.HFileInfo.<init>(HFileInfo.java:132) 
~[hbase-server-3.0.0-beta-2-SNAPSHOT.jar:3.0.0-beta-2-SNAPSHOT]
        at 
org.apache.hadoop.hbase.regionserver.StoreFileInfo.initHFileInfo(StoreFileInfo.java:763)
 ~[hbase-server-3.0.0-beta-2-SNAPSHOT.jar:3.0.0-beta-2-SNAPSHOT]
        at 
org.apache.hadoop.hbase.regionserver.HStoreFile.open(HStoreFile.java:395) 
~[hbase-server-3.0.0-beta-2-SNAPSHOT.jar:3.0.0-beta-2-SNAPSHOT]
        at 
org.apache.hadoop.hbase.regionserver.HStoreFile.initReader(HStoreFile.java:524) 
~[hbase-server-3.0.0-beta-2-SNAPSHOT.jar:3.0.0-beta-2-SNAPSHOT]
        at 
org.apache.hadoop.hbase.regionserver.StoreEngine.createStoreFileAndReader(StoreEngine.java:226)
 ~[hbase-server-3.0.0-beta-2-SNAPSHOT.jar:3.0.0-beta-2-SNAPSHOT]
        at 
org.apache.hadoop.hbase.regionserver.StoreEngine.lambda$openStoreFiles$0(StoreEngine.java:267)
 ~[hbase-server-3.0.0-beta-2-SNAPSHOT.jar:3.0.0-beta-2-SNAPSHOT]
        at java.util.concurrent.FutureTask.run(FutureTask.java:264) ~[?:?]
        at 
java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:539) ~[?:?]
        at java.util.concurrent.FutureTask.run(FutureTask.java:264) ~[?:?]
        at 
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1136) 
~[?:?]
        at 
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635) 
~[?:?]
        ... 1 more
Caused by: java.lang.ClassNotFoundException: 
org.apache.hadoop.hbase.KeyValue$KVComparator
        at 
jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:641) 
~[?:?]
        at 
jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:188)
 ~[?:?]
        at java.lang.ClassLoader.loadClass(ClassLoader.java:520) ~[?:?]
        at java.lang.Class.forName0(Native Method) ~[?:?]
        at java.lang.Class.forName(Class.java:375) ~[?:?]
        at 
org.apache.hadoop.hbase.io.hfile.FixedFileTrailer.getComparatorClass(FixedFileTrailer.java:576)
 ~[hbase-server-3.0.0-beta-2-SNAPSHOT.jar:3.0.0-beta-2-SNAPSHOT]
        at 
org.apache.hadoop.hbase.io.hfile.FixedFileTrailer.deserializeFromPB(FixedFileTrailer.java:304)
 ~[hbase-server-3.0.0-beta-2-SNAPSHOT.jar:3.0.0-beta-2-SNAPSHOT]
        at 
org.apache.hadoop.hbase.io.hfile.FixedFileTrailer.deserialize(FixedFileTrailer.java:250)
 ~[hbase-server-3.0.0-beta-2-SNAPSHOT.jar:3.0.0-beta-2-SNAPSHOT]
        at 
org.apache.hadoop.hbase.io.hfile.FixedFileTrailer.readFromStream(FixedFileTrailer.java:407)
 ~[hbase-server-3.0.0-beta-2-SNAPSHOT.jar:3.0.0-beta-2-SNAPSHOT]
        at 
org.apache.hadoop.hbase.io.hfile.HFileInfo.initTrailerAndContext(HFileInfo.java:349)
 ~[hbase-server-3.0.0-beta-2-SNAPSHOT.jar:3.0.0-beta-2-SNAPSHOT]
        at 
org.apache.hadoop.hbase.io.hfile.HFileInfo.<init>(HFileInfo.java:132) 
~[hbase-server-3.0.0-beta-2-SNAPSHOT.jar:3.0.0-beta-2-SNAPSHOT]
        at 
org.apache.hadoop.hbase.regionserver.StoreFileInfo.initHFileInfo(StoreFileInfo.java:763)
 ~[hbase-server-3.0.0-beta-2-SNAPSHOT.jar:3.0.0-beta-2-SNAPSHOT]
        at 
org.apache.hadoop.hbase.regionserver.HStoreFile.open(HStoreFile.java:395) 
~[hbase-server-3.0.0-beta-2-SNAPSHOT.jar:3.0.0-beta-2-SNAPSHOT]
        at 
org.apache.hadoop.hbase.regionserver.HStoreFile.initReader(HStoreFile.java:524) 
~[hbase-server-3.0.0-beta-2-SNAPSHOT.jar:3.0.0-beta-2-SNAPSHOT]
        at 
org.apache.hadoop.hbase.regionserver.StoreEngine.createStoreFileAndReader(StoreEngine.java:226)
 ~[hbase-server-3.0.0-beta-2-SNAPSHOT.jar:3.0.0-beta-2-SNAPSHOT]
        at 
org.apache.hadoop.hbase.regionserver.StoreEngine.lambda$openStoreFiles$0(StoreEngine.java:267)
 ~[hbase-server-3.0.0-beta-2-SNAPSHOT.jar:3.0.0-beta-2-SNAPSHOT]
        at java.util.concurrent.FutureTask.run(FutureTask.java:264) ~[?:?]
        at 
java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:539) ~[?:?]
        at java.util.concurrent.FutureTask.run(FutureTask.java:264) ~[?:?]
        at 
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1136) 
~[?:?]
        at 
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635) 
~[?:?]
        ... 1 more {code}
This problem seems to be introduced recently, and I can still upgrade from 
2.6.0 to 3.0.0 using the previous commits (E.g. commit from May 24: 
516c89e8597fb6ed391f9e85e594f8b7e5b56e38). 

I have attached the hmaster log.

  was:
I am trying to upgrade from 2.6.0 (stable release) to 3.0.0. I built 3.0.0 
using the following commit (a030e8099840e640684a68b6e4a79e7c1d5a6823)
{code:java}
commit a030e8099840e640684a68b6e4a79e7c1d5a6823 (HEAD -> branch-3, 
upstream/branch-3)
Author: Ray Mattingly <[email protected]>
Date:   Mon Sep 2 04:38:29 2024 -0400    HBASE-28697 Don't clean bulk load 
system entries until backup is complete (#6089)
    
    Co-authored-by: Ray Mattingly <[email protected]>
{code}
h1. Reproduce

Start up 2.6.0 cluster (1 HDFS, 1 HM, 1 RS), stop the entire cluster and then 
start up the 3.0.0 cluster. HMaster will crash with the following error
{code:java}
2024-09-04T04:29:18,917 WARN  [master/hmaster:16000:becomeActiveMaster] 
regionserver.HRegion: Failed initialize of region= 
master:store,,1.1595e783b53d99cd5eef43b6debb2682., starting to roll back 
memstore
java.io.IOException: java.io.IOException: 
org.apache.hadoop.hbase.io.hfile.CorruptHFileException: Problem reading HFile 
Trailer from file 
hdfs://master:8020/hbase/MasterData/data/master/store/1595e783b53d99cd5eef43b6debb2682/info/82c6d244b6244c179cdbafcead00ed75
        at 
org.apache.hadoop.hbase.regionserver.HRegion.initializeStores(HRegion.java:1215)
 ~[hbase-server-3.0.0-beta-2-SNAPSHOT.jar:3.0.0-beta-2-SNAPSHOT]
        at 
org.apache.hadoop.hbase.regionserver.HRegion.initializeStores(HRegion.java:1158)
 ~[hbase-server-3.0.0-beta-2-SNAPSHOT.jar:3.0.0-beta-2-SNAPSHOT]
        at 
org.apache.hadoop.hbase.regionserver.HRegion.initializeRegionInternals(HRegion.java:1030)
 ~[hbase-server-3.0.0-beta-2-SNAPSHOT.jar:3.0.0-beta-2-SNAPSHOT]
        at 
org.apache.hadoop.hbase.regionserver.HRegion.initialize(HRegion.java:974) 
~[hbase-server-3.0.0-beta-2-SNAPSHOT.jar:3.0.0-beta-2-SNAPSHOT]
        at 
org.apache.hadoop.hbase.regionserver.HRegion.openHRegion(HRegion.java:7794) 
~[hbase-server-3.0.0-beta-2-SNAPSHOT.jar:3.0.0-beta-2-SNAPSHOT]
        at 
org.apache.hadoop.hbase.regionserver.HRegion.openHRegionFromTableDir(HRegion.java:7749)
 ~[hbase-server-3.0.0-beta-2-SNAPSHOT.jar:3.0.0-beta-2-SNAPSHOT]
        at 
org.apache.hadoop.hbase.master.region.MasterRegion.open(MasterRegion.java:277) 
~[hbase-server-3.0.0-beta-2-SNAPSHOT.jar:3.0.0-beta-2-SNAPSHOT]
        at 
org.apache.hadoop.hbase.master.region.MasterRegion.create(MasterRegion.java:432)
 ~[hbase-server-3.0.0-beta-2-SNAPSHOT.jar:3.0.0-beta-2-SNAPSHOT]
        at 
org.apache.hadoop.hbase.master.region.MasterRegionFactory.create(MasterRegionFactory.java:135)
 ~[hbase-server-3.0.0-beta-2-SNAPSHOT.jar:3.0.0-beta-2-SNAPSHOT]
        at 
org.apache.hadoop.hbase.master.HMaster.finishActiveMasterInitialization(HMaster.java:1003)
 ~[hbase-server-3.0.0-beta-2-SNAPSHOT.jar:3.0.0-beta-2-SNAPSHOT]
        at 
org.apache.hadoop.hbase.master.HMaster.startActiveMasterManager(HMaster.java:2524)
 ~[hbase-server-3.0.0-beta-2-SNAPSHOT.jar:3.0.0-beta-2-SNAPSHOT]
        at 
org.apache.hadoop.hbase.master.HMaster.lambda$run$0(HMaster.java:613) 
~[hbase-server-3.0.0-beta-2-SNAPSHOT.jar:3.0.0-beta-2-SNAPSHOT]
        at 
org.apache.hadoop.hbase.trace.TraceUtil.lambda$tracedRunnable$2(TraceUtil.java:155)
 ~[hbase-common-3.0.0-beta-2-SNAPSHOT.jar:3.0.0-beta-2-SNAPSHOT]
        at java.lang.Thread.run(Thread.java:833) ~[?:?]
Caused by: java.io.IOException: 
org.apache.hadoop.hbase.io.hfile.CorruptHFileException: Problem reading HFile 
Trailer from file 
hdfs://master:8020/hbase/MasterData/data/master/store/1595e783b53d99cd5eef43b6debb2682/info/82c6d244b6244c179cdbafcead00ed75
        at 
org.apache.hadoop.hbase.regionserver.StoreEngine.openStoreFiles(StoreEngine.java:289)
 ~[hbase-server-3.0.0-beta-2-SNAPSHOT.jar:3.0.0-beta-2-SNAPSHOT]
        at 
org.apache.hadoop.hbase.regionserver.StoreEngine.initialize(StoreEngine.java:339)
 ~[hbase-server-3.0.0-beta-2-SNAPSHOT.jar:3.0.0-beta-2-SNAPSHOT]
        at org.apache.hadoop.hbase.regionserver.HStore.<init>(HStore.java:301) 
~[hbase-server-3.0.0-beta-2-SNAPSHOT.jar:3.0.0-beta-2-SNAPSHOT]
        at 
org.apache.hadoop.hbase.regionserver.HRegion.instantiateHStore(HRegion.java:6924)
 ~[hbase-server-3.0.0-beta-2-SNAPSHOT.jar:3.0.0-beta-2-SNAPSHOT]
        at 
org.apache.hadoop.hbase.regionserver.HRegion$1.call(HRegion.java:1181) 
~[hbase-server-3.0.0-beta-2-SNAPSHOT.jar:3.0.0-beta-2-SNAPSHOT]
        at 
org.apache.hadoop.hbase.regionserver.HRegion$1.call(HRegion.java:1178) 
~[hbase-server-3.0.0-beta-2-SNAPSHOT.jar:3.0.0-beta-2-SNAPSHOT]
        at java.util.concurrent.FutureTask.run(FutureTask.java:264) ~[?:?]
        at 
java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:539) ~[?:?]
        at java.util.concurrent.FutureTask.run(FutureTask.java:264) ~[?:?]
        at 
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1136) 
~[?:?]
        at 
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635) 
~[?:?]
        ... 1 more
Caused by: org.apache.hadoop.hbase.io.hfile.CorruptHFileException: Problem 
reading HFile Trailer from file 
hdfs://master:8020/hbase/MasterData/data/master/store/1595e783b53d99cd5eef43b6debb2682/info/82c6d244b6244c179cdbafcead00ed75
        at 
org.apache.hadoop.hbase.io.hfile.HFileInfo.initTrailerAndContext(HFileInfo.java:359)
 ~[hbase-server-3.0.0-beta-2-SNAPSHOT.jar:3.0.0-beta-2-SNAPSHOT]
        at 
org.apache.hadoop.hbase.io.hfile.HFileInfo.<init>(HFileInfo.java:132) 
~[hbase-server-3.0.0-beta-2-SNAPSHOT.jar:3.0.0-beta-2-SNAPSHOT]
        at 
org.apache.hadoop.hbase.regionserver.StoreFileInfo.initHFileInfo(StoreFileInfo.java:763)
 ~[hbase-server-3.0.0-beta-2-SNAPSHOT.jar:3.0.0-beta-2-SNAPSHOT]
        at 
org.apache.hadoop.hbase.regionserver.HStoreFile.open(HStoreFile.java:395) 
~[hbase-server-3.0.0-beta-2-SNAPSHOT.jar:3.0.0-beta-2-SNAPSHOT]
        at 
org.apache.hadoop.hbase.regionserver.HStoreFile.initReader(HStoreFile.java:524) 
~[hbase-server-3.0.0-beta-2-SNAPSHOT.jar:3.0.0-beta-2-SNAPSHOT]
        at 
org.apache.hadoop.hbase.regionserver.StoreEngine.createStoreFileAndReader(StoreEngine.java:226)
 ~[hbase-server-3.0.0-beta-2-SNAPSHOT.jar:3.0.0-beta-2-SNAPSHOT]
        at 
org.apache.hadoop.hbase.regionserver.StoreEngine.lambda$openStoreFiles$0(StoreEngine.java:267)
 ~[hbase-server-3.0.0-beta-2-SNAPSHOT.jar:3.0.0-beta-2-SNAPSHOT]
        at java.util.concurrent.FutureTask.run(FutureTask.java:264) ~[?:?]
        at 
java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:539) ~[?:?]
        at java.util.concurrent.FutureTask.run(FutureTask.java:264) ~[?:?]
        at 
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1136) 
~[?:?]
        at 
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635) 
~[?:?]
        ... 1 more
Caused by: java.io.IOException: java.lang.ClassNotFoundException: 
org.apache.hadoop.hbase.KeyValue$KVComparator
        at 
org.apache.hadoop.hbase.io.hfile.FixedFileTrailer.getComparatorClass(FixedFileTrailer.java:578)
 ~[hbase-server-3.0.0-beta-2-SNAPSHOT.jar:3.0.0-beta-2-SNAPSHOT]
        at 
org.apache.hadoop.hbase.io.hfile.FixedFileTrailer.deserializeFromPB(FixedFileTrailer.java:304)
 ~[hbase-server-3.0.0-beta-2-SNAPSHOT.jar:3.0.0-beta-2-SNAPSHOT]
        at 
org.apache.hadoop.hbase.io.hfile.FixedFileTrailer.deserialize(FixedFileTrailer.java:250)
 ~[hbase-server-3.0.0-beta-2-SNAPSHOT.jar:3.0.0-beta-2-SNAPSHOT]
        at 
org.apache.hadoop.hbase.io.hfile.FixedFileTrailer.readFromStream(FixedFileTrailer.java:407)
 ~[hbase-server-3.0.0-beta-2-SNAPSHOT.jar:3.0.0-beta-2-SNAPSHOT]
        at 
org.apache.hadoop.hbase.io.hfile.HFileInfo.initTrailerAndContext(HFileInfo.java:349)
 ~[hbase-server-3.0.0-beta-2-SNAPSHOT.jar:3.0.0-beta-2-SNAPSHOT]
        at 
org.apache.hadoop.hbase.io.hfile.HFileInfo.<init>(HFileInfo.java:132) 
~[hbase-server-3.0.0-beta-2-SNAPSHOT.jar:3.0.0-beta-2-SNAPSHOT]
        at 
org.apache.hadoop.hbase.regionserver.StoreFileInfo.initHFileInfo(StoreFileInfo.java:763)
 ~[hbase-server-3.0.0-beta-2-SNAPSHOT.jar:3.0.0-beta-2-SNAPSHOT]
        at 
org.apache.hadoop.hbase.regionserver.HStoreFile.open(HStoreFile.java:395) 
~[hbase-server-3.0.0-beta-2-SNAPSHOT.jar:3.0.0-beta-2-SNAPSHOT]
        at 
org.apache.hadoop.hbase.regionserver.HStoreFile.initReader(HStoreFile.java:524) 
~[hbase-server-3.0.0-beta-2-SNAPSHOT.jar:3.0.0-beta-2-SNAPSHOT]
        at 
org.apache.hadoop.hbase.regionserver.StoreEngine.createStoreFileAndReader(StoreEngine.java:226)
 ~[hbase-server-3.0.0-beta-2-SNAPSHOT.jar:3.0.0-beta-2-SNAPSHOT]
        at 
org.apache.hadoop.hbase.regionserver.StoreEngine.lambda$openStoreFiles$0(StoreEngine.java:267)
 ~[hbase-server-3.0.0-beta-2-SNAPSHOT.jar:3.0.0-beta-2-SNAPSHOT]
        at java.util.concurrent.FutureTask.run(FutureTask.java:264) ~[?:?]
        at 
java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:539) ~[?:?]
        at java.util.concurrent.FutureTask.run(FutureTask.java:264) ~[?:?]
        at 
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1136) 
~[?:?]
        at 
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635) 
~[?:?]
        ... 1 more
Caused by: java.lang.ClassNotFoundException: 
org.apache.hadoop.hbase.KeyValue$KVComparator
        at 
jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:641) 
~[?:?]
        at 
jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:188)
 ~[?:?]
        at java.lang.ClassLoader.loadClass(ClassLoader.java:520) ~[?:?]
        at java.lang.Class.forName0(Native Method) ~[?:?]
        at java.lang.Class.forName(Class.java:375) ~[?:?]
        at 
org.apache.hadoop.hbase.io.hfile.FixedFileTrailer.getComparatorClass(FixedFileTrailer.java:576)
 ~[hbase-server-3.0.0-beta-2-SNAPSHOT.jar:3.0.0-beta-2-SNAPSHOT]
        at 
org.apache.hadoop.hbase.io.hfile.FixedFileTrailer.deserializeFromPB(FixedFileTrailer.java:304)
 ~[hbase-server-3.0.0-beta-2-SNAPSHOT.jar:3.0.0-beta-2-SNAPSHOT]
        at 
org.apache.hadoop.hbase.io.hfile.FixedFileTrailer.deserialize(FixedFileTrailer.java:250)
 ~[hbase-server-3.0.0-beta-2-SNAPSHOT.jar:3.0.0-beta-2-SNAPSHOT]
        at 
org.apache.hadoop.hbase.io.hfile.FixedFileTrailer.readFromStream(FixedFileTrailer.java:407)
 ~[hbase-server-3.0.0-beta-2-SNAPSHOT.jar:3.0.0-beta-2-SNAPSHOT]
        at 
org.apache.hadoop.hbase.io.hfile.HFileInfo.initTrailerAndContext(HFileInfo.java:349)
 ~[hbase-server-3.0.0-beta-2-SNAPSHOT.jar:3.0.0-beta-2-SNAPSHOT]
        at 
org.apache.hadoop.hbase.io.hfile.HFileInfo.<init>(HFileInfo.java:132) 
~[hbase-server-3.0.0-beta-2-SNAPSHOT.jar:3.0.0-beta-2-SNAPSHOT]
        at 
org.apache.hadoop.hbase.regionserver.StoreFileInfo.initHFileInfo(StoreFileInfo.java:763)
 ~[hbase-server-3.0.0-beta-2-SNAPSHOT.jar:3.0.0-beta-2-SNAPSHOT]
        at 
org.apache.hadoop.hbase.regionserver.HStoreFile.open(HStoreFile.java:395) 
~[hbase-server-3.0.0-beta-2-SNAPSHOT.jar:3.0.0-beta-2-SNAPSHOT]
        at 
org.apache.hadoop.hbase.regionserver.HStoreFile.initReader(HStoreFile.java:524) 
~[hbase-server-3.0.0-beta-2-SNAPSHOT.jar:3.0.0-beta-2-SNAPSHOT]
        at 
org.apache.hadoop.hbase.regionserver.StoreEngine.createStoreFileAndReader(StoreEngine.java:226)
 ~[hbase-server-3.0.0-beta-2-SNAPSHOT.jar:3.0.0-beta-2-SNAPSHOT]
        at 
org.apache.hadoop.hbase.regionserver.StoreEngine.lambda$openStoreFiles$0(StoreEngine.java:267)
 ~[hbase-server-3.0.0-beta-2-SNAPSHOT.jar:3.0.0-beta-2-SNAPSHOT]
        at java.util.concurrent.FutureTask.run(FutureTask.java:264) ~[?:?]
        at 
java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:539) ~[?:?]
        at java.util.concurrent.FutureTask.run(FutureTask.java:264) ~[?:?]
        at 
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1136) 
~[?:?]
        at 
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635) 
~[?:?]
        ... 1 more {code}
 

This problem seems to be introduced recently, and I can still upgrade from 
2.6.0 to 3.0.0 using the previous commits (E.g. commit from May 24: 
516c89e8597fb6ed391f9e85e594f8b7e5b56e38)

I have attached the hmaster log.


> Upgrade from 2.6.0 to 3.0.0 crashed
> -----------------------------------
>
>                 Key: HBASE-28812
>                 URL: https://issues.apache.org/jira/browse/HBASE-28812
>             Project: HBase
>          Issue Type: Bug
>          Components: master
>    Affects Versions: 3.0.0
>            Reporter: Ke Han
>            Priority: Major
>              Labels: upgrade
>         Attachments: hbase--master-2d6e4fad2af5.log
>
>
> I am trying to upgrade from 2.6.0 (stable release) to 3.0.0. I built 3.0.0 
> using the following commit (a030e8099840e640684a68b6e4a79e7c1d5a6823)
> {code:java}
> commit a030e8099840e640684a68b6e4a79e7c1d5a6823 (HEAD -> branch-3, 
> upstream/branch-3)
> Author: Ray Mattingly <[email protected]>
> Date:   Mon Sep 2 04:38:29 2024 -0400    HBASE-28697 Don't clean bulk load 
> system entries until backup is complete (#6089)
>     
>     Co-authored-by: Ray Mattingly <[email protected]>
> {code}
> However, the HMaster would crash during the upgrade process.
> h1. Reproduce
> Step1: Start up 2.6.0 cluster (1 HDFS, 1 HM, 1 RS)
> Step2: Stop the entire cluster
> Step3: Upgrade to 3.0.0 cluster.
> HMaster will crash with the following error message
> {code:java}
> 2024-09-04T04:29:18,917 WARN  [master/hmaster:16000:becomeActiveMaster] 
> regionserver.HRegion: Failed initialize of region= 
> master:store,,1.1595e783b53d99cd5eef43b6debb2682., starting to roll back 
> memstore
> java.io.IOException: java.io.IOException: 
> org.apache.hadoop.hbase.io.hfile.CorruptHFileException: Problem reading HFile 
> Trailer from file 
> hdfs://master:8020/hbase/MasterData/data/master/store/1595e783b53d99cd5eef43b6debb2682/info/82c6d244b6244c179cdbafcead00ed75
>         at 
> org.apache.hadoop.hbase.regionserver.HRegion.initializeStores(HRegion.java:1215)
>  ~[hbase-server-3.0.0-beta-2-SNAPSHOT.jar:3.0.0-beta-2-SNAPSHOT]
>         at 
> org.apache.hadoop.hbase.regionserver.HRegion.initializeStores(HRegion.java:1158)
>  ~[hbase-server-3.0.0-beta-2-SNAPSHOT.jar:3.0.0-beta-2-SNAPSHOT]
>         at 
> org.apache.hadoop.hbase.regionserver.HRegion.initializeRegionInternals(HRegion.java:1030)
>  ~[hbase-server-3.0.0-beta-2-SNAPSHOT.jar:3.0.0-beta-2-SNAPSHOT]
>         at 
> org.apache.hadoop.hbase.regionserver.HRegion.initialize(HRegion.java:974) 
> ~[hbase-server-3.0.0-beta-2-SNAPSHOT.jar:3.0.0-beta-2-SNAPSHOT]
>         at 
> org.apache.hadoop.hbase.regionserver.HRegion.openHRegion(HRegion.java:7794) 
> ~[hbase-server-3.0.0-beta-2-SNAPSHOT.jar:3.0.0-beta-2-SNAPSHOT]
>         at 
> org.apache.hadoop.hbase.regionserver.HRegion.openHRegionFromTableDir(HRegion.java:7749)
>  ~[hbase-server-3.0.0-beta-2-SNAPSHOT.jar:3.0.0-beta-2-SNAPSHOT]
>         at 
> org.apache.hadoop.hbase.master.region.MasterRegion.open(MasterRegion.java:277)
>  ~[hbase-server-3.0.0-beta-2-SNAPSHOT.jar:3.0.0-beta-2-SNAPSHOT]
>         at 
> org.apache.hadoop.hbase.master.region.MasterRegion.create(MasterRegion.java:432)
>  ~[hbase-server-3.0.0-beta-2-SNAPSHOT.jar:3.0.0-beta-2-SNAPSHOT]
>         at 
> org.apache.hadoop.hbase.master.region.MasterRegionFactory.create(MasterRegionFactory.java:135)
>  ~[hbase-server-3.0.0-beta-2-SNAPSHOT.jar:3.0.0-beta-2-SNAPSHOT]
>         at 
> org.apache.hadoop.hbase.master.HMaster.finishActiveMasterInitialization(HMaster.java:1003)
>  ~[hbase-server-3.0.0-beta-2-SNAPSHOT.jar:3.0.0-beta-2-SNAPSHOT]
>         at 
> org.apache.hadoop.hbase.master.HMaster.startActiveMasterManager(HMaster.java:2524)
>  ~[hbase-server-3.0.0-beta-2-SNAPSHOT.jar:3.0.0-beta-2-SNAPSHOT]
>         at 
> org.apache.hadoop.hbase.master.HMaster.lambda$run$0(HMaster.java:613) 
> ~[hbase-server-3.0.0-beta-2-SNAPSHOT.jar:3.0.0-beta-2-SNAPSHOT]
>         at 
> org.apache.hadoop.hbase.trace.TraceUtil.lambda$tracedRunnable$2(TraceUtil.java:155)
>  ~[hbase-common-3.0.0-beta-2-SNAPSHOT.jar:3.0.0-beta-2-SNAPSHOT]
>         at java.lang.Thread.run(Thread.java:833) ~[?:?]
> Caused by: java.io.IOException: 
> org.apache.hadoop.hbase.io.hfile.CorruptHFileException: Problem reading HFile 
> Trailer from file 
> hdfs://master:8020/hbase/MasterData/data/master/store/1595e783b53d99cd5eef43b6debb2682/info/82c6d244b6244c179cdbafcead00ed75
>         at 
> org.apache.hadoop.hbase.regionserver.StoreEngine.openStoreFiles(StoreEngine.java:289)
>  ~[hbase-server-3.0.0-beta-2-SNAPSHOT.jar:3.0.0-beta-2-SNAPSHOT]
>         at 
> org.apache.hadoop.hbase.regionserver.StoreEngine.initialize(StoreEngine.java:339)
>  ~[hbase-server-3.0.0-beta-2-SNAPSHOT.jar:3.0.0-beta-2-SNAPSHOT]
>         at 
> org.apache.hadoop.hbase.regionserver.HStore.<init>(HStore.java:301) 
> ~[hbase-server-3.0.0-beta-2-SNAPSHOT.jar:3.0.0-beta-2-SNAPSHOT]
>         at 
> org.apache.hadoop.hbase.regionserver.HRegion.instantiateHStore(HRegion.java:6924)
>  ~[hbase-server-3.0.0-beta-2-SNAPSHOT.jar:3.0.0-beta-2-SNAPSHOT]
>         at 
> org.apache.hadoop.hbase.regionserver.HRegion$1.call(HRegion.java:1181) 
> ~[hbase-server-3.0.0-beta-2-SNAPSHOT.jar:3.0.0-beta-2-SNAPSHOT]
>         at 
> org.apache.hadoop.hbase.regionserver.HRegion$1.call(HRegion.java:1178) 
> ~[hbase-server-3.0.0-beta-2-SNAPSHOT.jar:3.0.0-beta-2-SNAPSHOT]
>         at java.util.concurrent.FutureTask.run(FutureTask.java:264) ~[?:?]
>         at 
> java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:539) ~[?:?]
>         at java.util.concurrent.FutureTask.run(FutureTask.java:264) ~[?:?]
>         at 
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1136)
>  ~[?:?]
>         at 
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)
>  ~[?:?]
>         ... 1 more
> Caused by: org.apache.hadoop.hbase.io.hfile.CorruptHFileException: Problem 
> reading HFile Trailer from file 
> hdfs://master:8020/hbase/MasterData/data/master/store/1595e783b53d99cd5eef43b6debb2682/info/82c6d244b6244c179cdbafcead00ed75
>         at 
> org.apache.hadoop.hbase.io.hfile.HFileInfo.initTrailerAndContext(HFileInfo.java:359)
>  ~[hbase-server-3.0.0-beta-2-SNAPSHOT.jar:3.0.0-beta-2-SNAPSHOT]
>         at 
> org.apache.hadoop.hbase.io.hfile.HFileInfo.<init>(HFileInfo.java:132) 
> ~[hbase-server-3.0.0-beta-2-SNAPSHOT.jar:3.0.0-beta-2-SNAPSHOT]
>         at 
> org.apache.hadoop.hbase.regionserver.StoreFileInfo.initHFileInfo(StoreFileInfo.java:763)
>  ~[hbase-server-3.0.0-beta-2-SNAPSHOT.jar:3.0.0-beta-2-SNAPSHOT]
>         at 
> org.apache.hadoop.hbase.regionserver.HStoreFile.open(HStoreFile.java:395) 
> ~[hbase-server-3.0.0-beta-2-SNAPSHOT.jar:3.0.0-beta-2-SNAPSHOT]
>         at 
> org.apache.hadoop.hbase.regionserver.HStoreFile.initReader(HStoreFile.java:524)
>  ~[hbase-server-3.0.0-beta-2-SNAPSHOT.jar:3.0.0-beta-2-SNAPSHOT]
>         at 
> org.apache.hadoop.hbase.regionserver.StoreEngine.createStoreFileAndReader(StoreEngine.java:226)
>  ~[hbase-server-3.0.0-beta-2-SNAPSHOT.jar:3.0.0-beta-2-SNAPSHOT]
>         at 
> org.apache.hadoop.hbase.regionserver.StoreEngine.lambda$openStoreFiles$0(StoreEngine.java:267)
>  ~[hbase-server-3.0.0-beta-2-SNAPSHOT.jar:3.0.0-beta-2-SNAPSHOT]
>         at java.util.concurrent.FutureTask.run(FutureTask.java:264) ~[?:?]
>         at 
> java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:539) ~[?:?]
>         at java.util.concurrent.FutureTask.run(FutureTask.java:264) ~[?:?]
>         at 
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1136)
>  ~[?:?]
>         at 
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)
>  ~[?:?]
>         ... 1 more
> Caused by: java.io.IOException: java.lang.ClassNotFoundException: 
> org.apache.hadoop.hbase.KeyValue$KVComparator
>         at 
> org.apache.hadoop.hbase.io.hfile.FixedFileTrailer.getComparatorClass(FixedFileTrailer.java:578)
>  ~[hbase-server-3.0.0-beta-2-SNAPSHOT.jar:3.0.0-beta-2-SNAPSHOT]
>         at 
> org.apache.hadoop.hbase.io.hfile.FixedFileTrailer.deserializeFromPB(FixedFileTrailer.java:304)
>  ~[hbase-server-3.0.0-beta-2-SNAPSHOT.jar:3.0.0-beta-2-SNAPSHOT]
>         at 
> org.apache.hadoop.hbase.io.hfile.FixedFileTrailer.deserialize(FixedFileTrailer.java:250)
>  ~[hbase-server-3.0.0-beta-2-SNAPSHOT.jar:3.0.0-beta-2-SNAPSHOT]
>         at 
> org.apache.hadoop.hbase.io.hfile.FixedFileTrailer.readFromStream(FixedFileTrailer.java:407)
>  ~[hbase-server-3.0.0-beta-2-SNAPSHOT.jar:3.0.0-beta-2-SNAPSHOT]
>         at 
> org.apache.hadoop.hbase.io.hfile.HFileInfo.initTrailerAndContext(HFileInfo.java:349)
>  ~[hbase-server-3.0.0-beta-2-SNAPSHOT.jar:3.0.0-beta-2-SNAPSHOT]
>         at 
> org.apache.hadoop.hbase.io.hfile.HFileInfo.<init>(HFileInfo.java:132) 
> ~[hbase-server-3.0.0-beta-2-SNAPSHOT.jar:3.0.0-beta-2-SNAPSHOT]
>         at 
> org.apache.hadoop.hbase.regionserver.StoreFileInfo.initHFileInfo(StoreFileInfo.java:763)
>  ~[hbase-server-3.0.0-beta-2-SNAPSHOT.jar:3.0.0-beta-2-SNAPSHOT]
>         at 
> org.apache.hadoop.hbase.regionserver.HStoreFile.open(HStoreFile.java:395) 
> ~[hbase-server-3.0.0-beta-2-SNAPSHOT.jar:3.0.0-beta-2-SNAPSHOT]
>         at 
> org.apache.hadoop.hbase.regionserver.HStoreFile.initReader(HStoreFile.java:524)
>  ~[hbase-server-3.0.0-beta-2-SNAPSHOT.jar:3.0.0-beta-2-SNAPSHOT]
>         at 
> org.apache.hadoop.hbase.regionserver.StoreEngine.createStoreFileAndReader(StoreEngine.java:226)
>  ~[hbase-server-3.0.0-beta-2-SNAPSHOT.jar:3.0.0-beta-2-SNAPSHOT]
>         at 
> org.apache.hadoop.hbase.regionserver.StoreEngine.lambda$openStoreFiles$0(StoreEngine.java:267)
>  ~[hbase-server-3.0.0-beta-2-SNAPSHOT.jar:3.0.0-beta-2-SNAPSHOT]
>         at java.util.concurrent.FutureTask.run(FutureTask.java:264) ~[?:?]
>         at 
> java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:539) ~[?:?]
>         at java.util.concurrent.FutureTask.run(FutureTask.java:264) ~[?:?]
>         at 
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1136)
>  ~[?:?]
>         at 
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)
>  ~[?:?]
>         ... 1 more
> Caused by: java.lang.ClassNotFoundException: 
> org.apache.hadoop.hbase.KeyValue$KVComparator
>         at 
> jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:641) 
> ~[?:?]
>         at 
> jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:188)
>  ~[?:?]
>         at java.lang.ClassLoader.loadClass(ClassLoader.java:520) ~[?:?]
>         at java.lang.Class.forName0(Native Method) ~[?:?]
>         at java.lang.Class.forName(Class.java:375) ~[?:?]
>         at 
> org.apache.hadoop.hbase.io.hfile.FixedFileTrailer.getComparatorClass(FixedFileTrailer.java:576)
>  ~[hbase-server-3.0.0-beta-2-SNAPSHOT.jar:3.0.0-beta-2-SNAPSHOT]
>         at 
> org.apache.hadoop.hbase.io.hfile.FixedFileTrailer.deserializeFromPB(FixedFileTrailer.java:304)
>  ~[hbase-server-3.0.0-beta-2-SNAPSHOT.jar:3.0.0-beta-2-SNAPSHOT]
>         at 
> org.apache.hadoop.hbase.io.hfile.FixedFileTrailer.deserialize(FixedFileTrailer.java:250)
>  ~[hbase-server-3.0.0-beta-2-SNAPSHOT.jar:3.0.0-beta-2-SNAPSHOT]
>         at 
> org.apache.hadoop.hbase.io.hfile.FixedFileTrailer.readFromStream(FixedFileTrailer.java:407)
>  ~[hbase-server-3.0.0-beta-2-SNAPSHOT.jar:3.0.0-beta-2-SNAPSHOT]
>         at 
> org.apache.hadoop.hbase.io.hfile.HFileInfo.initTrailerAndContext(HFileInfo.java:349)
>  ~[hbase-server-3.0.0-beta-2-SNAPSHOT.jar:3.0.0-beta-2-SNAPSHOT]
>         at 
> org.apache.hadoop.hbase.io.hfile.HFileInfo.<init>(HFileInfo.java:132) 
> ~[hbase-server-3.0.0-beta-2-SNAPSHOT.jar:3.0.0-beta-2-SNAPSHOT]
>         at 
> org.apache.hadoop.hbase.regionserver.StoreFileInfo.initHFileInfo(StoreFileInfo.java:763)
>  ~[hbase-server-3.0.0-beta-2-SNAPSHOT.jar:3.0.0-beta-2-SNAPSHOT]
>         at 
> org.apache.hadoop.hbase.regionserver.HStoreFile.open(HStoreFile.java:395) 
> ~[hbase-server-3.0.0-beta-2-SNAPSHOT.jar:3.0.0-beta-2-SNAPSHOT]
>         at 
> org.apache.hadoop.hbase.regionserver.HStoreFile.initReader(HStoreFile.java:524)
>  ~[hbase-server-3.0.0-beta-2-SNAPSHOT.jar:3.0.0-beta-2-SNAPSHOT]
>         at 
> org.apache.hadoop.hbase.regionserver.StoreEngine.createStoreFileAndReader(StoreEngine.java:226)
>  ~[hbase-server-3.0.0-beta-2-SNAPSHOT.jar:3.0.0-beta-2-SNAPSHOT]
>         at 
> org.apache.hadoop.hbase.regionserver.StoreEngine.lambda$openStoreFiles$0(StoreEngine.java:267)
>  ~[hbase-server-3.0.0-beta-2-SNAPSHOT.jar:3.0.0-beta-2-SNAPSHOT]
>         at java.util.concurrent.FutureTask.run(FutureTask.java:264) ~[?:?]
>         at 
> java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:539) ~[?:?]
>         at java.util.concurrent.FutureTask.run(FutureTask.java:264) ~[?:?]
>         at 
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1136)
>  ~[?:?]
>         at 
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)
>  ~[?:?]
>         ... 1 more {code}
> This problem seems to be introduced recently, and I can still upgrade from 
> 2.6.0 to 3.0.0 using the previous commits (E.g. commit from May 24: 
> 516c89e8597fb6ed391f9e85e594f8b7e5b56e38). 
> I have attached the hmaster log.



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