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https://issues.apache.org/jira/browse/HIVE-4220?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13652133#comment-13652133
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Mikhail Bautin commented on HIVE-4220:
--------------------------------------
[~navis]: I think HIVE-4516 solves the same problem but in somewhat simpler way
(using ThreadLocal). Could you please take a look at the patch there and let us
know what you think?
[~ashutoshc]: I think it is reasonable to assume at this point that Hive
primitives, especially as low-level as TimestampWritable, have to be
thread-safe. This is not only required by third-party low-latency query
processing systems such as AmpLab's Shark, but also by the effort in the Hive
community itself to speed up query processing (e.g.
http://hortonworks.com/blog/introducing-tez-faster-hadoop-processing/) that I
believe will inevitably require keeping pre-existing multi-threaded "executor"
JVMs around.
> TimestampWritable.toString throws array index exception sometimes
> -----------------------------------------------------------------
>
> Key: HIVE-4220
> URL: https://issues.apache.org/jira/browse/HIVE-4220
> Project: Hive
> Issue Type: Bug
> Reporter: Navis
> Assignee: Navis
> Attachments: HIVE-4220.D9669.1.patch
>
>
> {noformat}
> org.apache.hive.service.cli.HiveSQLException: java.io.IOException:
> java.lang.ArrayIndexOutOfBoundsException: 45
> at
> org.apache.hive.service.cli.operation.SQLOperation.getNextRowSet(SQLOperation.java:215)
> at
> org.apache.hive.service.cli.operation.OperationManager.getOperationNextRowSet(OperationManager.java:170)
> at
> org.apache.hive.service.cli.CLIService.fetchResults(CLIService.java:288)
> at
> org.apache.hive.service.cli.thrift.ThriftCLIService.FetchResults(ThriftCLIService.java:348)
> at
> org.apache.hive.service.cli.thrift.TCLIService$Processor$FetchResults.getResult(TCLIService.java:1553)
> at
> org.apache.hive.service.cli.thrift.TCLIService$Processor$FetchResults.getResult(TCLIService.java:1538)
> at org.apache.thrift.ProcessFunction.process(ProcessFunction.java:39)
> at org.apache.thrift.TBaseProcessor.process(TBaseProcessor.java:39)
> at
> org.apache.thrift.server.TThreadPoolServer$WorkerProcess.run(TThreadPoolServer.java:206)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
> at java.lang.Thread.run(Thread.java:662)
> Caused by: java.io.IOException: java.lang.ArrayIndexOutOfBoundsException: 45
> at org.apache.hadoop.hive.ql.exec.FetchTask.fetch(FetchTask.java:194)
> at org.apache.hadoop.hive.ql.Driver.getResults(Driver.java:1449)
> at
> org.apache.hive.service.cli.operation.SQLOperation.getNextRowSet(SQLOperation.java:193)
> ... 11 more
> Caused by: java.lang.ArrayIndexOutOfBoundsException: 45
> at
> sun.util.calendar.BaseCalendar.getCalendarDateFromFixedDate(BaseCalendar.java:436)
> at
> java.util.GregorianCalendar.computeFields(GregorianCalendar.java:2081)
> at
> java.util.GregorianCalendar.computeFields(GregorianCalendar.java:1996)
> at java.util.Calendar.setTimeInMillis(Calendar.java:1110)
> at java.util.Calendar.setTime(Calendar.java:1076)
> at java.text.SimpleDateFormat.format(SimpleDateFormat.java:875)
> at java.text.SimpleDateFormat.format(SimpleDateFormat.java:868)
> at java.text.DateFormat.format(DateFormat.java:316)
> at
> org.apache.hadoop.hive.serde2.io.TimestampWritable.toString(TimestampWritable.java:327)
> at
> org.apache.hadoop.hive.serde2.lazy.LazyTimestamp.writeUTF8(LazyTimestamp.java:95)
> at
> org.apache.hadoop.hive.serde2.lazy.LazyUtils.writePrimitiveUTF8(LazyUtils.java:234)
> at
> org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe.serialize(LazySimpleSerDe.java:427)
> at
> org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe.serializeField(LazySimpleSerDe.java:381)
> at
> org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe.serialize(LazySimpleSerDe.java:365)
> at
> org.apache.hadoop.hive.ql.exec.ListSinkOperator.processOp(ListSinkOperator.java:96)
> at org.apache.hadoop.hive.ql.exec.Operator.process(Operator.java:487)
> at org.apache.hadoop.hive.ql.exec.Operator.forward(Operator.java:821)
> at
> org.apache.hadoop.hive.ql.exec.SelectOperator.processOp(SelectOperator.java:84)
> at org.apache.hadoop.hive.ql.exec.Operator.process(Operator.java:487)
> at org.apache.hadoop.hive.ql.exec.Operator.forward(Operator.java:821)
> at
> org.apache.hadoop.hive.ql.exec.TableScanOperator.processOp(TableScanOperator.java:90)
> at org.apache.hadoop.hive.ql.exec.Operator.process(Operator.java:487)
> at
> org.apache.hadoop.hive.ql.exec.FetchOperator.pushRow(FetchOperator.java:474)
> at
> org.apache.hadoop.hive.ql.exec.FetchOperator.pushRow(FetchOperator.java:468)
> at
> org.apache.hadoop.hive.ql.exec.FetchTask.fetchAndPush(FetchTask.java:222)
> at org.apache.hadoop.hive.ql.exec.FetchTask.fetch(FetchTask.java:188)
> ... 13 more
> {noformat}
> data formatter in TimestampWritable is declared static and shared but it's
> not thread-safe.
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