gaoran10 opened a new pull request #9631:
URL: https://github.com/apache/pulsar/pull/9631


   ### Motivation
   
   Currently, the Pulsar SQL query bytes schema data will cause an error.
   
   *Reproduce*
   1. produce bytes schema data.
   2. query data by the Pulsar SQL.
   3. the error log could be seen.
   
   *Error log*
   ```
   com.google.common.util.concurrent.UncheckedExecutionException: 
java.nio.BufferUnderflowException
        at com.google.common.cache.LocalCache$Segment.get(LocalCache.java:2051)
        at com.google.common.cache.LocalCache.get(LocalCache.java:3951)
        at com.google.common.cache.LocalCache.getOrLoad(LocalCache.java:3974)
        at 
com.google.common.cache.LocalCache$LocalLoadingCache.get(LocalCache.java:4935)
        at 
org.apache.pulsar.sql.presto.PulsarSqlSchemaInfoProvider.getSchemaByVersion(PulsarSqlSchemaInfoProvider.java:76)
        at 
org.apache.pulsar.sql.presto.PulsarRecordCursor.advanceNextPosition(PulsarRecordCursor.java:471)
        at 
io.prestosql.spi.connector.RecordPageSource.getNextPage(RecordPageSource.java:90)
        at 
io.prestosql.operator.TableScanOperator.getOutput(TableScanOperator.java:302)
        at io.prestosql.operator.Driver.processInternal(Driver.java:379)
        at io.prestosql.operator.Driver.lambda$processFor$8(Driver.java:283)
        at io.prestosql.operator.Driver.tryWithLock(Driver.java:675)
        at io.prestosql.operator.Driver.processFor(Driver.java:276)
        at 
io.prestosql.execution.SqlTaskExecution$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_332__testversion____20210219_094906_2.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)
   Caused by: java.nio.BufferUnderflowException
        at java.nio.Buffer.nextGetIndex(Buffer.java:509)
        at java.nio.HeapByteBuffer.getLong(HeapByteBuffer.java:415)
        at 
org.apache.pulsar.sql.presto.PulsarSqlSchemaInfoProvider.loadSchema(PulsarSqlSchemaInfoProvider.java:106)
        at 
org.apache.pulsar.sql.presto.PulsarSqlSchemaInfoProvider.access$000(PulsarSqlSchemaInfoProvider.java:49)
        at 
org.apache.pulsar.sql.presto.PulsarSqlSchemaInfoProvider$1.load(PulsarSqlSchemaInfoProvider.java:61)
        at 
org.apache.pulsar.sql.presto.PulsarSqlSchemaInfoProvider$1.load(PulsarSqlSchemaInfoProvider.java:58)
        at 
com.google.common.cache.LocalCache$LoadingValueReference.loadFuture(LocalCache.java:3529)
        at 
com.google.common.cache.LocalCache$Segment.loadSync(LocalCache.java:2278)
        at 
com.google.common.cache.LocalCache$Segment.lockedGetOrLoad(LocalCache.java:2155)
        at com.google.common.cache.LocalCache$Segment.get(LocalCache.java:2045)
        ... 18 more
   
   ```
   
   ### Modifications
   
   Add check for bytes schema, if the schema is bytes schema use the schema 
info of the bytes schema directly.
   
   ### Verifying this change
   
   Add a new integration test.
   
   ### Does this pull request potentially affect one of the following parts:
   
   *If `yes` was chosen, please highlight the changes*
   
     - Dependencies (does it add or upgrade a dependency): (no)
     - The public API: (no)
     - The schema: (no)
     - The default values of configurations: (no)
     - The wire protocol: (no)
     - The rest endpoints: (no)
     - The admin cli options: (no)
     - Anything that affects deployment: (no)
   
   


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