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https://issues.apache.org/jira/browse/HIVE-13300?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15205293#comment-15205293
]
Xuefu Zhang commented on HIVE-13300:
------------------------------------
We should be able to make a keywritable directly from the input (key) with the
first n-1 bytes without coping all bytes and stripping off the last byte, which
might gives slight performance advantage.
> Hive on spark throws exception for multi-insert with join
> ---------------------------------------------------------
>
> Key: HIVE-13300
> URL: https://issues.apache.org/jira/browse/HIVE-13300
> Project: Hive
> Issue Type: Bug
> Components: Spark
> Affects Versions: 2.0.0
> Reporter: Szehon Ho
> Assignee: Szehon Ho
> Attachments: HIVE-13300.2.patch, HIVE-13300.patch
>
>
> For certain multi-insert queries, Hive on Spark throws a deserialization
> error.
> {noformat}
> create table status_updates(userid int,status string,ds string);
> create table profiles(userid int,school string,gender int);
> drop table school_summary; create table school_summary(school string,cnt int)
> partitioned by (ds string);
> drop table gender_summary; create table gender_summary(gender int,cnt int)
> partitioned by (ds string);
> insert into status_updates values (1, "status_1", "2016-03-16");
> insert into profiles values (1, "school_1", 0);
> set hive.auto.convert.join=false;
> set hive.execution.engine=spark;
> FROM (SELECT a.status, b.school, b.gender
> FROM status_updates a JOIN profiles b
> ON (a.userid = b.userid and
> a.ds='2009-03-20' )
> ) subq1
> INSERT OVERWRITE TABLE gender_summary
> PARTITION(ds='2009-03-20')
> SELECT subq1.gender, COUNT(1) GROUP BY subq1.gender
> INSERT OVERWRITE TABLE school_summary
> PARTITION(ds='2009-03-20')
> SELECT subq1.school, COUNT(1) GROUP BY subq1.school
> {noformat}
> Error:
> {noformat}
> 16/03/17 13:29:00 [task-result-getter-3]: WARN scheduler.TaskSetManager: Lost
> task 0.0 in stage 2.0 (TID 3, localhost): java.lang.RuntimeException:
> org.apache.hadoop.hive.ql.metadata.HiveException: Hive Runtime Error: Unable
> to deserialize reduce input key from x1x128x0x0 with properties
> {serialization.sort.order.null=a, columns=reducesinkkey0,
> serialization.lib=org.apache.hadoop.hive.serde2.binarysortable.BinarySortableSerDe,
> serialization.sort.order=+, columns.types=int}
> at
> org.apache.hadoop.hive.ql.exec.spark.SparkReduceRecordHandler.processRow(SparkReduceRecordHandler.java:279)
> at
> org.apache.hadoop.hive.ql.exec.spark.HiveReduceFunctionResultList.processNextRecord(HiveReduceFunctionResultList.java:49)
> at
> org.apache.hadoop.hive.ql.exec.spark.HiveReduceFunctionResultList.processNextRecord(HiveReduceFunctionResultList.java:28)
> at
> org.apache.hadoop.hive.ql.exec.spark.HiveBaseFunctionResultList$ResultIterator.hasNext(HiveBaseFunctionResultList.java:95)
> at
> scala.collection.convert.Wrappers$JIteratorWrapper.hasNext(Wrappers.scala:41)
> at
> org.apache.spark.shuffle.sort.BypassMergeSortShuffleWriter.write(BypassMergeSortShuffleWriter.java:126)
> at
> org.apache.spark.scheduler.ShuffleMapTask.runTask(ShuffleMapTask.scala:73)
> at
> org.apache.spark.scheduler.ShuffleMapTask.runTask(ShuffleMapTask.scala:41)
> at org.apache.spark.scheduler.Task.run(Task.scala:89)
> at org.apache.spark.executor.Executor$TaskRunner.run(Executor.scala:213)
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
> at java.lang.Thread.run(Thread.java:724)
> Caused by: org.apache.hadoop.hive.ql.metadata.HiveException: Hive Runtime
> Error: Unable to deserialize reduce input key from x1x128x0x0 with properties
> {serialization.sort.order.null=a, columns=reducesinkkey0,
> serialization.lib=org.apache.hadoop.hive.serde2.binarysortable.BinarySortableSerDe,
> serialization.sort.order=+, columns.types=int}
> at
> org.apache.hadoop.hive.ql.exec.spark.SparkReduceRecordHandler.processRow(SparkReduceRecordHandler.java:251)
> ... 12 more
> Caused by: org.apache.hadoop.hive.serde2.SerDeException: java.io.EOFException
> at
> org.apache.hadoop.hive.serde2.binarysortable.BinarySortableSerDe.deserialize(BinarySortableSerDe.java:241)
> at
> org.apache.hadoop.hive.ql.exec.spark.SparkReduceRecordHandler.processRow(SparkReduceRecordHandler.java:249)
> ... 12 more
> Caused by: java.io.EOFException
> at
> org.apache.hadoop.hive.serde2.binarysortable.InputByteBuffer.read(InputByteBuffer.java:54)
> at
> org.apache.hadoop.hive.serde2.binarysortable.BinarySortableSerDe.deserializeInt(BinarySortableSerDe.java:597)
> at
> org.apache.hadoop.hive.serde2.binarysortable.BinarySortableSerDe.deserialize(BinarySortableSerDe.java:288)
> at
> org.apache.hadoop.hive.serde2.binarysortable.BinarySortableSerDe.deserialize(BinarySortableSerDe.java:237)
> ... 13 more
> {noformat}
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