Hey guys, I’m getting NullPointerException while using a *significant_terms*
aggregation. It happens in this line:
org.elasticsearch.search.aggregations.bucket.significant.heuristics.SignificanceHeuristicStreams.read(SignificanceHeuristicStreams.java:38)
The error is in the deserialization: *Failed to deserialize response of
type [org.elasticsearch.action.search.SearchResponse]*
I’m using the Java API. I just printed the request and manually did it
through the REST API and everything went fine. It happens only when using
the Java API.
I'm using ES 1.3.2.
*The printed search request:*
> {
> "from" : 0,
> "size" : 6,
> "timeout" : 30000,
> "query" : {
> "filtered" : {
> "query" : {
> "query_string" : {
> "query" : "ayrton senna",
> "fields" : [ "title^2.0", "description" ],
> "default_operator" : "and"
> }
> },
> "filter" : {
> "bool" : {
> "must" : [ {
> "range" : {
> "created_at" : {
> "from" : null,
> "to" : "2014-09-19T20:28:30.000Z",
> "include_lower" : true,
> "include_upper" : true
> },
> "_cache" : true
> }
> }, {
> "range" : {
> "published_at" : {
> "from" : null,
> "to" : "2014-09-19T20:28:30.000Z",
> "include_lower" : true,
> "include_upper" : true
> },
> "_cache" : true
> }
> }, {
> "range" : {
> "published_at" : {
> "from" : "2014-08-20T20:28:30.000Z",
> "to" : "2014-09-19T20:28:30.000Z",
> "include_lower" : true,
> "include_upper" : true
> },
> "_cache" : false
> }
> } ]
> }
> }
> }
> },
> "fields" : [ ],
> "aggregations" : {
> "topics" : {
> "significant_terms" : {
> "field" : "topic_ids",
> "size" : 20
> }
> }
> }
> }
*The complete error stacktrace:*
[ERROR] 2014-09-19 20:29:13.177 c.b.s.SearchServlet -
org.elasticsearch.transport.TransportSerializationException: Failed to
deserialize response of type
[org.elasticsearch.action.search.SearchResponse]
org.elasticsearch.transport.TransportSerializationException: Failed to
deserialize response of type
[org.elasticsearch.action.search.SearchResponse]
at
org.elasticsearch.transport.netty.MessageChannelHandler.handleResponse(MessageChannelHandler.java:152)
at
org.elasticsearch.transport.netty.MessageChannelHandler.messageReceived(MessageChannelHandler.java:127)
at
org.elasticsearch.common.netty.channel.SimpleChannelUpstreamHandler.handleUpstream(SimpleChannelUpstreamHandler.java:70)
at
org.elasticsearch.common.netty.channel.DefaultChannelPipeline.sendUpstream(DefaultChannelPipeline.java:564)
at
org.elasticsearch.common.netty.channel.DefaultChannelPipeline$DefaultChannelHandlerContext.sendUpstream(DefaultChannelPipeline.java:791)
at
org.elasticsearch.common.netty.channel.Channels.fireMessageReceived(Channels.java:296)
at
org.elasticsearch.common.netty.handler.codec.frame.FrameDecoder.unfoldAndFireMessageReceived(FrameDecoder.java:462)
at
org.elasticsearch.common.netty.handler.codec.frame.FrameDecoder.callDecode(FrameDecoder.java:443)
at
org.elasticsearch.common.netty.handler.codec.frame.FrameDecoder.messageReceived(FrameDecoder.java:303)
at
org.elasticsearch.common.netty.channel.SimpleChannelUpstreamHandler.handleUpstream(SimpleChannelUpstreamHandler.java:70)
at
org.elasticsearch.common.netty.channel.DefaultChannelPipeline.sendUpstream(DefaultChannelPipeline.java:564)
at
org.elasticsearch.common.netty.channel.DefaultChannelPipeline.sendUpstream(DefaultChannelPipeline.java:559)
at
org.elasticsearch.common.netty.channel.Channels.fireMessageReceived(Channels.java:268)
at
org.elasticsearch.common.netty.channel.Channels.fireMessageReceived(Channels.java:255)
at
org.elasticsearch.common.netty.channel.socket.nio.NioWorker.read(NioWorker.java:88)
at
org.elasticsearch.common.netty.channel.socket.nio.AbstractNioWorker.process(AbstractNioWorker.java:108)
at
org.elasticsearch.common.netty.channel.socket.nio.AbstractNioSelector.run(AbstractNioSelector.java:318)
at
org.elasticsearch.common.netty.channel.socket.nio.AbstractNioWorker.run(AbstractNioWorker.java:89)
at
org.elasticsearch.common.netty.channel.socket.nio.NioWorker.run(NioWorker.java:178)
at
org.elasticsearch.common.netty.util.ThreadRenamingRunnable.run(ThreadRenamingRunnable.java:108)
at
org.elasticsearch.common.netty.util.internal.DeadLockProofWorker$1.run(DeadLockProofWorker.java:42)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.NullPointerException
at
org.elasticsearch.search.aggregations.bucket.significant.heuristics.SignificanceHeuristicStreams.read(SignificanceHeuristicStreams.java:38)
at
org.elasticsearch.search.aggregations.bucket.significant.SignificantLongTerms.readFrom(SignificantLongTerms.java:126)
at
org.elasticsearch.search.aggregations.bucket.significant.SignificantLongTerms$1.readResult(SignificantLongTerms.java:50)
at
org.elasticsearch.search.aggregations.bucket.significant.SignificantLongTerms$1.readResult(SignificantLongTerms.java:46)
at
org.elasticsearch.search.aggregations.InternalAggregations.readFrom(InternalAggregations.java:190)
at
org.elasticsearch.search.aggregations.InternalAggregations.readAggregations(InternalAggregations.java:172)
at
org.elasticsearch.search.internal.InternalSearchResponse.readFrom(InternalSearchResponse.java:116)
at
org.elasticsearch.search.internal.InternalSearchResponse.readInternalSearchResponse(InternalSearchResponse.java:105)
at
org.elasticsearch.action.search.SearchResponse.readFrom(SearchResponse.java:227)
at
org.elasticsearch.transport.netty.MessageChannelHandler.handleResponse(MessageChannelHandler.java:150)
... 23 more
*The (Scala) code I used to generate the request :*
val request = ....
> val topicsAggregation =
> significantTerms("topics").field("topic_ids").size(20)
> request.addAggregation(topicsAggregation)
*The code to retrieve the aggregation (although it seems it never reaches
here):*
> val terms: SignificantTerms = response.getAggregations.get("topics")
Any ideas?
Thanks!
Felipe Hummel
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