Hello,
Are there any ideas where this problem comes from and how to fix?

Jun 18 21:38:05 prod022 hbase[148581]: 2019-06-18 21:38:05,348 WARN  
[MemStoreFlusher.0] regionserver.HStore: Failed flushing store file, retrying 
num=9
Jun 18 21:38:05 prod022 hbase[148581]: java.io.IOException: Added a key not 
lexically larger than previous. Current cell = 
\x0D100395583733fW+,WQ/d:p/1560882798036/DeleteColumn/vlen=0/seqid=30023231, 
lastCell = \x0D100395583733fW+,WQ/d:p/1560882798036/Put/vlen=29/seqid=30023591
Jun 18 21:38:05 prod022 hbase[148581]:         at 
org.apache.hadoop.hbase.io.hfile.AbstractHFileWriter.checkKey(AbstractHFileWriter.java:204)
Jun 18 21:38:05 prod022 hbase[148581]:         at 
org.apache.hadoop.hbase.io.hfile.HFileWriterV2.append(HFileWriterV2.java:279)
Jun 18 21:38:05 prod022 hbase[148581]:         at 
org.apache.hadoop.hbase.io.hfile.HFileWriterV3.append(HFileWriterV3.java:87)
Jun 18 21:38:05 prod022 hbase[148581]:         at 
org.apache.hadoop.hbase.regionserver.StoreFile$Writer.append(StoreFile.java:1053)
Jun 18 21:38:05 prod022 hbase[148581]:         at 
org.apache.hadoop.hbase.regionserver.StoreFlusher.performFlush(StoreFlusher.java:139)
Jun 18 21:38:05 prod022 hbase[148581]:         at 
org.apache.hadoop.hbase.regionserver.DefaultStoreFlusher.flushSnapshot(DefaultStoreFlusher.java:75)
Jun 18 21:38:05 prod022 hbase[148581]:         at 
org.apache.hadoop.hbase.regionserver.HStore.flushCache(HStore.java:969)
Jun 18 21:38:05 prod022 hbase[148581]:         at 
org.apache.hadoop.hbase.regionserver.HStore$StoreFlusherImpl.flushCache(HStore.java:2484)
Jun 18 21:38:05 prod022 hbase[148581]:         at 
org.apache.hadoop.hbase.regionserver.HRegion.internalFlushCacheAndCommit(HRegion.java:2622)
Jun 18 21:38:05 prod022 hbase[148581]:         at 
org.apache.hadoop.hbase.regionserver.HRegion.internalFlushcache(HRegion.java:2352)
Jun 18 21:38:05 prod022 hbase[148581]:         at 
org.apache.hadoop.hbase.regionserver.HRegion.internalFlushcache(HRegion.java:2314)
Jun 18 21:38:05 prod022 hbase[148581]:         at 
org.apache.hadoop.hbase.regionserver.HRegion.flushcache(HRegion.java:2200)
Jun 18 21:38:05 prod022 hbase[148581]:         at 
org.apache.hadoop.hbase.regionserver.HRegion.flush(HRegion.java:2125)
Jun 18 21:38:05 prod022 hbase[148581]:         at 
org.apache.hadoop.hbase.regionserver.MemStoreFlusher.flushRegion(MemStoreFlusher.java:512)
Jun 18 21:38:05 prod022 hbase[148581]:         at 
org.apache.hadoop.hbase.regionserver.MemStoreFlusher.flushRegion(MemStoreFlusher.java:482)
Jun 18 21:38:05 prod022 hbase[148581]:         at 
org.apache.hadoop.hbase.regionserver.MemStoreFlusher.access$900(MemStoreFlusher.java:76)
Jun 18 21:38:05 prod022 hbase[148581]:         at 
org.apache.hadoop.hbase.regionserver.MemStoreFlusher$FlushHandler.run(MemStoreFlusher.java:264)
Jun 18 21:38:05 prod022 hbase[148581]:         at 
java.lang.Thread.run(Thread.java:748)
Jun 18 21:38:05 prod022 hbase[148581]: 2019-06-18 21:38:05,373 FATAL 
[MemStoreFlusher.0] regionserver.HRegionServer: ABORTING region server 
prod022,60020,1560521871613: Replay of WAL required. Forcing server shutdown
Jun 18 21:38:05 prod022 hbase[148581]: 
org.apache.hadoop.hbase.DroppedSnapshotException: region: 
TBL_C,\x0D04606203096428+jaVbx.,1558885224779.b4633aee06956663b05e8322ce34b0a3.
Jun 18 21:38:05 prod022 hbase[148581]:         at 
org.apache.hadoop.hbase.regionserver.HRegion.internalFlushCacheAndCommit(HRegion.java:2675)
Jun 18 21:38:05 prod022 hbase[148581]:         at 
org.apache.hadoop.hbase.regionserver.HRegion.internalFlushcache(HRegion.java:2352)
Jun 18 21:38:05 prod022 hbase[148581]:         at 
org.apache.hadoop.hbase.regionserver.HRegion.internalFlushcache(HRegion.java:2314)
Jun 18 21:38:05 prod022 hbase[148581]:         at 
org.apache.hadoop.hbase.regionserver.HRegion.flushcache(HRegion.java:2200)
Jun 18 21:38:05 prod022 hbase[148581]:         at 
org.apache.hadoop.hbase.regionserver.HRegion.flush(HRegion.java:2125)
Jun 18 21:38:05 prod022 hbase[148581]:         at 
org.apache.hadoop.hbase.regionserver.MemStoreFlusher.flushRegion(MemStoreFlusher.java:512)
Jun 18 21:38:05 prod022 hbase[148581]:         at 
org.apache.hadoop.hbase.regionserver.MemStoreFlusher.flushRegion(MemStoreFlusher.java:482)
Jun 18 21:38:05 prod022 hbase[148581]:         at 
org.apache.hadoop.hbase.regionserver.MemStoreFlusher.access$900(MemStoreFlusher.java:76)
Jun 18 21:38:05 prod022 hbase[148581]:         at 
org.apache.hadoop.hbase.regionserver.MemStoreFlusher$FlushHandler.run(MemStoreFlusher.java:264)
Jun 18 21:38:05 prod022 hbase[148581]:         at 
java.lang.Thread.run(Thread.java:748)
Jun 18 21:38:05 prod022 hbase[148581]: Caused by: java.io.IOException: Added a 
key not lexically larger than previous. Current cell = 
\x0D100395583733fW+,WQ/d:p/1560882798036/DeleteColumn/vlen=0/seqid=30023231, 
lastCell = \x0D100395583733fW+,WQ/d:p/1560882798036/Put/vlen=29/seqid=30023591
Jun 18 21:38:05 prod022 hbase[148581]:         at 
org.apache.hadoop.hbase.io.hfile.AbstractHFileWriter.checkKey(AbstractHFileWriter.java:204)
Jun 18 21:38:05 prod022 hbase[148581]:         at 
org.apache.hadoop.hbase.io.hfile.HFileWriterV2.append(HFileWriterV2.java:279)
Jun 18 21:38:05 prod022 hbase[148581]:         at 
org.apache.hadoop.hbase.io.hfile.HFileWriterV3.append(HFileWriterV3.java:87)
Jun 18 21:38:05 prod022 hbase[148581]:         at 
org.apache.hadoop.hbase.regionserver.StoreFile$Writer.append(StoreFile.java:1053)
Jun 18 21:38:05 prod022 hbase[148581]:         at 
org.apache.hadoop.hbase.regionserver.StoreFlusher.performFlush(StoreFlusher.java:139)
Jun 18 21:38:05 prod022 hbase[148581]:         at 
org.apache.hadoop.hbase.regionserver.DefaultStoreFlusher.flushSnapshot(DefaultStoreFlusher.java:75)
Jun 18 21:38:05 prod022 hbase[148581]:         at 
org.apache.hadoop.hbase.regionserver.HStore.flushCache(HStore.java:969)
Jun 18 21:38:05 prod022 hbase[148581]:         at 
org.apache.hadoop.hbase.regionserver.HStore$StoreFlusherImpl.flushCache(HStore.java:2484)
Jun 18 21:38:05 prod022 hbase[148581]:         at 
org.apache.hadoop.hbase.regionserver.HRegion.internalFlushCacheAndCommit(HRegion.java:2622)
Jun 18 21:38:05 prod022 hbase[148581]:         ... 9 more
Jun 18 21:38:05 prod022 hbase[148581]: 2019-06-18 21:38:05,373 FATAL 
[MemStoreFlusher.0] regionserver.HRegionServer: RegionServer abort: loaded 
coprocessors are: [org.apache.phoenix.coprocessor.ScanRegionObserver...

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