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Client hang for Presto query

See original GitHub issue

Alluxio Version: 2.0.1

Describe the bug

We repeatedly run a query and find it hang when running for several days.

The query is

select count(1) from a table.

This table we already load in ahead from hdfs to alluxio During the running period, some alluxio workers may be down and some lost data may need to read directly from hdfs.

From jstack, find 30 threads (as we set presto concurrency to 30) stuck at

"20190919_081107_00969_nmmwc.1.7-19-4862" #4862 prio=5 os_prio=0 tid=0x00007f9618009dd0 nid=0xa86a2 waiting on condition [0x00007f925c2f1000]
   java.lang.Thread.State: WAITING (parking)
        at sun.misc.Unsafe.park(Native Method)
        - parking to wait for  <0x00007f9bf8c94008> (a java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject)
        at java.util.concurrent.locks.LockSupport.park(LockSupport.java:175)
        at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2039)
        at alluxio.resource.ResourcePool.acquire(ResourcePool.java:132)
        at alluxio.resource.ResourcePool.acquire(ResourcePool.java:77)
        at alluxio.client.file.FileSystemContext.acquireBlockMasterClient(FileSystemContext.java:421)
        at alluxio.client.file.FileSystemContext.acquireBlockMasterClientResource(FileSystemContext.java:441)
        at alluxio.client.block.AlluxioBlockStore.getInStream(AlluxioBlockStore.java:169)
        at alluxio.client.file.FileInStream.positionedReadInternal(FileInStream.java:252)
        at alluxio.client.file.FileInStream.positionedRead(FileInStream.java:232)
        at alluxio.hadoop.HdfsFileInputStream.read(HdfsFileInputStream.java:128)
        at alluxio.hadoop.HdfsFileInputStream.readFully(HdfsFileInputStream.java:145)
        at org.apache.hadoop.fs.FSDataInputStream.readFully(FSDataInputStream.java:111)
        at org.apache.hadoop.fs.FSDataInputStream.readFully(FSDataInputStream.java:120)
        at io.prestosql.parquet.reader.MetadataReader.readFully(MetadataReader.java:313)
        at io.prestosql.parquet.reader.MetadataReader.readFooter(MetadataReader.java:92)
        at io.prestosql.plugin.hive.parquet.ParquetPageSourceFactory.createParquetPageSource(ParquetPageSourceFactory.java:161)
        at io.prestosql.plugin.hive.parquet.ParquetPageSourceFactory.createPageSource(ParquetPageSourceFactory.java:120)
        at io.prestosql.plugin.hive.HivePageSourceProvider.createHivePageSource(HivePageSourceProvider.java:162)
        at io.prestosql.plugin.hive.HivePageSourceProvider.createPageSource(HivePageSourceProvider.java:96)
        at io.prestosql.spi.connector.classloader.ClassLoaderSafeConnectorPageSourceProvider.createPageSource(ClassLoaderSafeConnectorPageSourceProvider.java:53)
        at io.prestosql.split.PageSourceManager.createPageSource(PageSourceManager.java:56)
        at io.prestosql.operator.TableScanOperator.getOutput(TableScanOperator.java:271)
        at io.prestosql.operator.Driver.processInternal(Driver.java:379)
        at io.prestosql.operator.Driver.lambda$processFor$8(Driver.java:283)
        at io.prestosql.operator.Driver$$Lambda$2810/201986911.get(Unknown Source)
        at io.prestosql.operator.Driver.tryWithLock(Driver.java:675)
        at io.prestosql.operator.Driver.processFor(Driver.java:276)
        at io.prestosql.execution.SqlTaskExecution$DriverSplitRunner.processFor(SqlTaskExecution.java:1075)
        at io.prestosql.execution.executor.PrioritizedSplitRunner.process(PrioritizedSplitRunner.java:163)
        at io.prestosql.execution.executor.TaskExecutor$TaskRunner.run(TaskExecutor.java:484)
        at io.prestosql.$gen.Presto_shopee_101_dirty__shopee102____20190918_090137_1.run(Unknown Source)
        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)

To Reproduce Currently, not clear.

Expected behavior No hanging

Urgency High

Additional context