Chandra Sekhar created HBASE-21130:
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Summary: NullPointerException in StoreScanner
Key: HBASE-21130
URL: https://issues.apache.org/jira/browse/HBASE-21130
Project: HBase
Issue Type: Bug
Components: regionserver
Affects Versions: 1.3.1
Reporter: Chandra Sekhar
I've created a script that will put continuous put one record (size 2.5KB) and
flush immediately -- in middle am doing compaction at regular intervals. Rate
of flushes are around 20flushes/sec. After some time, my RS aborted and never
came up back
with the following error
{code:java}
2018-08-29 11:34:34,183 DEBUG [flush-table-TestTable_client_1258196-thread-1]
regionserver.RSRpcServices: Closing region operation on
TestTable_client_1,32816,1535513244999.762a3e633b03e5f847f357aca28768d0.
2018-08-29 11:34:34,183 INFO
[RpcServer.FifoWFPBQ.default.handler=49,queue=4,port=16040]
regionserver.RSRpcServices: flush table task succeed 1, failed 10.
2018-08-29 11:34:34,280 INFO [MemStoreFlusher.0]
regionserver.DefaultStoreFlusher: Flushed, sequenceid=230, memsize=4.2 K,
hasBloomFilter=false, into tmp file
hdfs://hacluster/hbase/data/hbase/meta/1588230740/.tmp/1cf1deee293848b0bea08940696dbd2a
2018-08-29 11:34:34,290 INFO [MemStoreFlusher.0]
regionserver.StoreFile$Reader: Loaded Delete Family Bloom (CompoundBloomFilter)
metadata for 1cf1deee293848b0bea08940696dbd2a
2018-08-29 11:34:34,291 DEBUG [MemStoreFlusher.0]
regionserver.HRegionFileSystem: Committing store file
hdfs://hacluster/hbase/data/hbase/meta/1588230740/.tmp/1cf1deee293848b0bea08940696dbd2a
as
hdfs://hacluster/hbase/data/hbase/meta/1588230740/info/1cf1deee293848b0bea08940696dbd2a
2018-08-29 11:34:34,304 INFO [MemStoreFlusher.0]
regionserver.StoreFile$Reader: Loaded Delete Family Bloom (CompoundBloomFilter)
metadata for 1cf1deee293848b0bea08940696dbd2a
2018-08-29 11:34:34,304 INFO [MemStoreFlusher.0] regionserver.HStore: Added
hdfs://hacluster/hbase/data/hbase/meta/1588230740/info/1cf1deee293848b0bea08940696dbd2a,
entries=13, sequenceid=230, filesize=6.6 K
2018-08-29 11:34:34,307 FATAL [MemStoreFlusher.0] regionserver.HRegionServer:
ABORTING region server host-xxxx,16040,1535454741321: Replay of WAL required.
Forcing server shutdown
org.apache.hadoop.hbase.DroppedSnapshotException: region: hbase:meta,,1
at
org.apache.hadoop.hbase.regionserver.HRegion.internalFlushCacheAndCommit(HRegion.java:2578)
at
org.apache.hadoop.hbase.regionserver.HRegion.internalFlushcache(HRegion.java:2255)
at
org.apache.hadoop.hbase.regionserver.HRegion.internalFlushcache(HRegion.java:2217)
at
org.apache.hadoop.hbase.regionserver.HRegion.flushcache(HRegion.java:2108)
at org.apache.hadoop.hbase.regionserver.HRegion.flush(HRegion.java:2034)
at
org.apache.hadoop.hbase.regionserver.MemStoreFlusher.flushRegion(MemStoreFlusher.java:505)
at
org.apache.hadoop.hbase.regionserver.MemStoreFlusher.flushRegion(MemStoreFlusher.java:475)
at
org.apache.hadoop.hbase.regionserver.MemStoreFlusher.access$900(MemStoreFlusher.java:75)
at
org.apache.hadoop.hbase.regionserver.MemStoreFlusher$FlushHandler.run(MemStoreFlusher.java:263)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.NullPointerException
at java.util.ArrayList.<init>(ArrayList.java:177)
at
org.apache.hadoop.hbase.regionserver.StoreScanner.updateReaders(StoreScanner.java:826)
at
org.apache.hadoop.hbase.regionserver.HStore.notifyChangedReadersObservers(HStore.java:1117)
at
org.apache.hadoop.hbase.regionserver.HStore.updateStorefiles(HStore.java:1090)
at
org.apache.hadoop.hbase.regionserver.HStore.access$700(HStore.java:120)
at
org.apache.hadoop.hbase.regionserver.HStore$StoreFlusherImpl.commit(HStore.java:2450)
at
org.apache.hadoop.hbase.regionserver.HRegion.internalFlushCacheAndCommit(HRegion.java:2533)
... 9 more
2018-08-29 11:34:34,307 FATAL [MemStoreFlusher.0] regionserver.HRegionServer:
RegionServer abort: loaded coprocessors are:
[org.apache.hadoop.hbase.security.access.AccessController,
org.apache.hadoop.hbase.
{code}
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