[HIVE-14857] select count(*) fails with tez over cassandra

• Type: Bug
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: 1.2.1
• Assignee: Unassigned
• Reporter: jean carlo rivera ura
• Created: 29/Sep/16 09:20
• Updated: 29/Sep/16 14:53

Description

Hello,

We have a cluster with nodes having cassandra and hadoop (hortonworks 2.3.2) and we have tez as our engine by default.

I have a table in cassandra, and I use the driver hive-cassandra to do selects over it. This is the table

CREATE TABLE table1 ( campaign_id text, sid text, name text, ts timestamp, PRIMARY KEY (campaign_id, sid) ) WITH CLUSTERING ORDER BY (sid ASC)

And I have only 3 partitions

campaign_id	sid	name	ts

45sqdqs	sqsd	dea	NULL
QSHJKA	sqsd	dea	NULL
45s-qs	sqsd	dea	NULL

At the moment to do a "select count ( * )" over table using hive like that (tez is our engine by default)

 hive -e "select count(*) from table1;" 

I got this error:

Status: Failed
Vertex failed, vertexName=Map 1, 
vertexId=vertex_1474275943985_0179_1_00, diagnostics=[Task failed, 
taskId=task_1474275943985_0179_1_00_000001, diagnostics=[TaskAttempt 0 
failed, info=[Error: Failure while running 
task:java.lang.RuntimeException: 
org.apache.tez.dag.api.TezUncheckedException: Expected length: 12416 
actual length: 9223372036854775711
   at org.apache.hadoop.hive.ql.exec.tez.TezProcessor.initializeAndRunProcessor(TezProcessor.java:171)
   at org.apache.hadoop.hive.ql.exec.tez.TezProcessor.run(TezProcessor.java:137)
   at org.apache.tez.runtime.LogicalIOProcessorRuntimeTask.run(LogicalIOProcessorRuntimeTask.java:344)
   at org.apache.tez.runtime.task.TezTaskRunner$TaskRunnerCallable$1.run(TezTaskRunner.java:179)
   at org.apache.tez.runtime.task.TezTaskRunner$TaskRunnerCallable$1.run(TezTaskRunner.java:171)
   at java.security.AccessController.doPrivileged(Native Method)
   at javax.security.auth.Subject.doAs(Subject.java:422)
   at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1657)
   at org.apache.tez.runtime.task.TezTaskRunner$TaskRunnerCallable.callInternal(TezTaskRunner.java:171)
   at org.apache.tez.runtime.task.TezTaskRunner$TaskRunnerCallable.callInternal(TezTaskRunner.java:167)
   at org.apache.tez.common.CallableWithNdc.call(CallableWithNdc.java:36)
   at java.util.concurrent.FutureTask.run(FutureTask.java:266)
   at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
   at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
   at java.lang.Thread.run(Thread.java:745)
Caused by: org.apache.tez.dag.api.TezUncheckedException: Expected length: 12416 actual length: 9223372036854775711
   at org.apache.hadoop.mapred.split.TezGroupedSplit.readFields(TezGroupedSplit.java:128)
   at org.apache.hadoop.io.serializer.WritableSerialization$WritableDeserializer.deserialize(WritableSerialization.java:71)
   at org.apache.hadoop.io.serializer.WritableSerialization$WritableDeserializer.deserialize(WritableSerialization.java:42)
   at org.apache.tez.mapreduce.hadoop.MRInputHelpers.createOldFormatSplitFromUserPayload(MRInputHelpers.java:177)
   at org.apache.tez.mapreduce.lib.MRInputUtils.getOldSplitDetailsFromEvent(MRInputUtils.java:136)
   at org.apache.tez.mapreduce.input.MRInput.initFromEventInternal(MRInput.java:643)
   at org.apache.tez.mapreduce.input.MRInput.initFromEvent(MRInput.java:621)
   at org.apache.tez.mapreduce.input.MRInputLegacy.checkAndAwaitRecordReaderInitialization(MRInputLegacy.java:145)
   at org.apache.tez.mapreduce.input.MRInputLegacy.init(MRInputLegacy.java:109)
   at org.apache.hadoop.hive.ql.exec.tez.MapRecordProcessor.getMRInput(MapRecordProcessor.java:390)
   at org.apache.hadoop.hive.ql.exec.tez.MapRecordProcessor.init(MapRecordProcessor.java:128)
   at org.apache.hadoop.hive.ql.exec.tez.TezProcessor.initializeAndRunProcessor(TezProcessor.java:147)
   ... 14 more

So far I understand, in readfields we are getting more data that we are expecting. But considering the size of the table( only 3 records), I dont think the data is a problem.

Another thing to add is that if I do a "select *", it works perfectly fine with tez. Using the engine mp, select count ( * ) and select * work fine as well.

We are using hortonworks version 2.3.2