[SAMZA-2190] Cannot deserialize an incoming message

• Type: Bug
• Status: Resolved
• Priority: Critical
• Resolution: Fixed
• Affects Version/s: 0.9.0
• Component/s: hello-samza

Environment

haddop:2.7.1

samza:0.9

• Assignee: Unassigned
• Reporter: AndyChau
• Created: 12/May/19 04:09
• Updated: 12/May/19 04:40
• Resolved: 12/May/19 04:40

Description

look for the record，have one error about   Cannot deserialize an incoming message.

How to solve this problem. 

 

 

2019-05-12 11:58:19 SamzaContainer [ERROR] Caught exception in process loop.
org.apache.samza.system.SystemConsumersException: Cannot deserialize an incoming message.
at org.apache.samza.system.SystemConsumers.update(SystemConsumers.scala:303)
at org.apache.samza.system.SystemConsumers.tryUpdate(SystemConsumers.scala:270)
at org.apache.samza.system.SystemConsumers.org$apache$samza$system$SystemConsumers$$poll(SystemConsumers.scala:258)
at org.apache.samza.system.SystemConsumers$$anonfun$refresh$2.apply(SystemConsumers.scala:286)
at org.apache.samza.system.SystemConsumers$$anonfun$refresh$2.apply(SystemConsumers.scala:286)
at scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scala:244)
at scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scala:244)
at scala.collection.Iterator$class.foreach(Iterator.scala:727)
at scala.collection.AbstractIterator.foreach(Iterator.scala:1157)
at scala.collection.MapLike$DefaultKeySet.foreach(MapLike.scala:174)
at scala.collection.TraversableLike$class.map(TraversableLike.scala:244)
at scala.collection.AbstractSet.scala$collection$SetLike$$super$map(Set.scala:47)
at scala.collection.SetLike$class.map(SetLike.scala:93)
at scala.collection.AbstractSet.map(Set.scala:47)
at org.apache.samza.system.SystemConsumers.refresh(SystemConsumers.scala:286)
at org.apache.samza.system.SystemConsumers.choose(SystemConsumers.scala:211)
at org.apache.samza.container.RunLoop$$anonfun$process$2$$anonfun$2.apply(RunLoop.scala:100)
at org.apache.samza.container.RunLoop$$anonfun$process$2$$anonfun$2.apply(RunLoop.scala:100)
at org.apache.samza.util.TimerUtils$class.updateTimer(TimerUtils.scala:37)
at org.apache.samza.container.RunLoop.updateTimer(RunLoop.scala:36)
at org.apache.samza.container.RunLoop$$anonfun$process$2.apply(RunLoop.scala:99)
at org.apache.samza.util.TimerUtils$class.updateTimer(TimerUtils.scala:37)
at org.apache.samza.container.RunLoop.updateTimer(RunLoop.scala:36)
at org.apache.samza.container.RunLoop.process(RunLoop.scala:98)
at org.apache.samza.container.RunLoop.run(RunLoop.scala:69)
at org.apache.samza.container.SamzaContainer.run(SamzaContainer.scala:555)
at org.apache.samza.container.SamzaContainer$.safeMain(SamzaContainer.scala:93)
at org.apache.samza.container.SamzaContainer$.main(SamzaContainer.scala:67)
at org.apache.samza.container.SamzaContainer.main(SamzaContainer.scala)
Caused by: org.codehaus.jackson.JsonParseException: Unexpected character ('a' (code 97)): expected a valid value (number, String, array, object, 'true', 'false' or 'null')
at [Source: [B@7502291e; line: 1, column: 2]
at org.codehaus.jackson.JsonParser._constructError(JsonParser.java:1291)
at org.codehaus.jackson.impl.JsonParserMinimalBase._reportError(JsonParserMinimalBase.java:385)
at org.codehaus.jackson.impl.JsonParserMinimalBase._reportUnexpectedChar(JsonParserMinimalBase.java:306)
at org.codehaus.jackson.impl.Utf8StreamParser._handleUnexpectedValue(Utf8StreamParser.java:1581)
at org.codehaus.jackson.impl.Utf8StreamParser._nextTokenNotInObject(Utf8StreamParser.java:436)
at org.codehaus.jackson.impl.Utf8StreamParser.nextToken(Utf8StreamParser.java:322)
at org.codehaus.jackson.map.ObjectMapper._initForReading(ObjectMapper.java:2432)
at org.codehaus.jackson.map.ObjectMapper._readMapAndClose(ObjectMapper.java:2389)
at org.codehaus.jackson.map.ObjectMapper.readValue(ObjectMapper.java:1667)
at org.apache.samza.serializers.JsonSerde.fromBytes(JsonSerde.scala:33)
at org.apache.samza.serializers.SerdeManager.fromBytes(SerdeManager.scala:115)
at org.apache.samza.system.SystemConsumers.update(SystemConsumers.scala:300)
... 28 more