Umesh Agashe created HBASE-20403:
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Summary: Prefetch sometimes doesn't work with encrypted file system
Key: HBASE-20403
URL: https://issues.apache.org/jira/browse/HBASE-20403
Project: HBase
Issue Type: Bug
Affects Versions: 2.0.0-beta-2
Reporter: Umesh Agashe
Fix For: 2.0.0
Log from long running test has following stack trace a few times:
{code}
2018-04-09 18:33:21,523 WARN org.apache.hadoop.hbase.io.hfile.HFileReaderImpl:
Prefetch
path=hdfs://ns1/hbase/data/default/IntegrationTestBigLinkedList_20180409172704/35f1a7ef13b9d327665228abdbcdffae/meta/9089d98b2a6b4847b3fcf6aceb124988,
offset=36884200, end=231005989
java.lang.IllegalArgumentException
at java.nio.Buffer.limit(Buffer.java:275)
at
org.apache.hadoop.hdfs.ByteBufferStrategy.readFromBlock(ReaderStrategy.java:183)
at org.apache.hadoop.hdfs.DFSInputStream.readBuffer(DFSInputStream.java:705)
at
org.apache.hadoop.hdfs.DFSInputStream.readWithStrategy(DFSInputStream.java:766)
at org.apache.hadoop.hdfs.DFSInputStream.read(DFSInputStream.java:831)
at org.apache.hadoop.crypto.CryptoInputStream.read(CryptoInputStream.java:197)
at java.io.DataInputStream.read(DataInputStream.java:149)
at
org.apache.hadoop.hbase.io.hfile.HFileBlock.readWithExtra(HFileBlock.java:762)
at
org.apache.hadoop.hbase.io.hfile.HFileBlock$FSReaderImpl.readAtOffset(HFileBlock.java:1559)
at
org.apache.hadoop.hbase.io.hfile.HFileBlock$FSReaderImpl.readBlockDataInternal(HFileBlock.java:1771)
at
org.apache.hadoop.hbase.io.hfile.HFileBlock$FSReaderImpl.readBlockData(HFileBlock.java:1594)
at
org.apache.hadoop.hbase.io.hfile.HFileReaderImpl.readBlock(HFileReaderImpl.java:1488)
at
org.apache.hadoop.hbase.io.hfile.HFileReaderImpl$1.run(HFileReaderImpl.java:278)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at
java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:180)
at
java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:293)
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)
{code}
Size on disk calculations seem to get messed up due to encryption. Possible
fixes can be:
* if file is encrypted with FileStatus#isEncrypted() and do not prefetch.
* document that hbase.rs.prefetchblocksonopen cannot be true if file is
encrypted.
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