[jira] [Created] (HBASE-21568) Disable use of BlockCache for LoadIncrementalHFiles

["Josh Elser (JIRA)" <ji...@apache.org>]

Josh Elser created HBASE-21568:
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             Summary: Disable use of BlockCache for LoadIncrementalHFiles
                 Key: HBASE-21568
                 URL: https://issues.apache.org/jira/browse/HBASE-21568
             Project: HBase
          Issue Type: Bug
          Components: Client
            Reporter: Josh Elser
            Assignee: Josh Elser
             Fix For: 2.2.0, 2.1.2, 2.0.4


[~vrodionov] added some API to {{CacheConfig}} via HBASE-17151 to allow callers to specify that they do not want to use a block cache when reading an HFile.

If the BucketCache is set up to use the FileSystem, we can have a situation where the client tries to instantiate the BucketCache and is disallowed due to filesystem permissions:
{code:java}
2018-12-03 16:22:03,032 ERROR [LoadIncrementalHFiles-0] bucket.FileIOEngine: Failed allocating cache on /mnt/hbase/cache.data
java.io.FileNotFoundException: /mnt/hbase/cache.data (Permission denied)
  at java.io.RandomAccessFile.open0(Native Method)
  at java.io.RandomAccessFile.open(RandomAccessFile.java:316)
  at java.io.RandomAccessFile.<init>(RandomAccessFile.java:243)
  at java.io.RandomAccessFile.<init>(RandomAccessFile.java:124)
  at org.apache.hadoop.hbase.io.hfile.bucket.FileIOEngine.<init>(FileIOEngine.java:81)
  at org.apache.hadoop.hbase.io.hfile.bucket.BucketCache.getIOEngineFromName(BucketCache.java:382)
  at org.apache.hadoop.hbase.io.hfile.bucket.BucketCache.<init>(BucketCache.java:262)
  at org.apache.hadoop.hbase.io.hfile.CacheConfig.getBucketCache(CacheConfig.java:633)
  at org.apache.hadoop.hbase.io.hfile.CacheConfig.instantiateBlockCache(CacheConfig.java:663)
  at org.apache.hadoop.hbase.io.hfile.CacheConfig.<init>(CacheConfig.java:250)
  at org.apache.hadoop.hbase.tool.LoadIncrementalHFiles.groupOrSplit(LoadIncrementalHFiles.java:713)
  at org.apache.hadoop.hbase.tool.LoadIncrementalHFiles$3.call(LoadIncrementalHFiles.java:621)
  at org.apache.hadoop.hbase.tool.LoadIncrementalHFiles$3.call(LoadIncrementalHFiles.java:617)
  at java.util.concurrent.FutureTask.run(FutureTask.java:266)
  at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
  at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
  at java.lang.Thread.run(Thread.java:748)
{code}
LoadIncrementalHfiles should provide the {{CacheConfig.DISABLE}}.



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