[GitHub] [hbase] joshelser edited a comment on issue #1019: HBASE-23679 Use new FileSystem objects during bulk loads

[GitBox]

joshelser edited a comment on issue #1019: HBASE-23679 Use new FileSystem 
objects during bulk loads
URL: https://github.com/apache/hbase/pull/1019#issuecomment-573258755
 
 
   ```
   2020-01-11 00:15:00,797 WARN  
[RpcServer.default.FPBQ.Fifo.handler=99,queue=9,port=16020] fs.FileSystem: 
Caching new filesystem: -279427062
   java.lang.Exception
        at 
org.apache.hadoop.fs.FileSystem$Cache.getInternal(FileSystem.java:3365)
        at org.apache.hadoop.fs.FileSystem$Cache.get(FileSystem.java:3320)
        at org.apache.hadoop.fs.FileSystem.get(FileSystem.java:479)
        at org.apache.hadoop.fs.Path.getFileSystem(Path.java:361)
        at 
org.apache.hadoop.hbase.regionserver.HStore.assertBulkLoadHFileOk(HStore.java:761)
        at 
org.apache.hadoop.hbase.regionserver.HRegion.bulkLoadHFiles(HRegion.java:5958)
        at 
org.apache.hadoop.hbase.regionserver.SecureBulkLoadManager$1.run(SecureBulkLoadManager.java:264)
        at 
org.apache.hadoop.hbase.regionserver.SecureBulkLoadManager$1.run(SecureBulkLoadManager.java:233)
        at java.security.AccessController.doPrivileged(Native Method)
        at javax.security.auth.Subject.doAs(Subject.java:360)
        at 
org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1710)
        at 
org.apache.hadoop.hbase.regionserver.SecureBulkLoadManager.secureBulkLoadHFiles(SecureBulkLoadManager.java:233)
        at 
org.apache.hadoop.hbase.regionserver.RSRpcServices.bulkLoadHFile(RSRpcServices.java:2338)
        at 
org.apache.hadoop.hbase.shaded.protobuf.generated.ClientProtos$ClientService$2.callBlockingMethod(ClientProtos.java:42004)
        at org.apache.hadoop.hbase.ipc.RpcServer.call(RpcServer.java:413)
        at org.apache.hadoop.hbase.ipc.CallRunner.run(CallRunner.java:131)
        at 
org.apache.hadoop.hbase.ipc.RpcExecutor$Handler.run(RpcExecutor.java:324)
        at 
org.apache.hadoop.hbase.ipc.RpcExecutor$Handler.run(RpcExecutor.java:304)
   ```
   
   Looks like this isn't quite sufficient. Another leak (albeit, much slower) 
coming here. Need to do more to push down that DFS instance we made and use 
that until we move the files into the final location.
   
   Added some debug to FileSystem.java to see the above. Testing is just done 
via IntegrationTestBulkLoad with high number of loops but small chain length.

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