通过弹性搜索进行批量更新Java API会引发异常

Question

弹性搜索中的批量更新Java Api会引发以下异常。

org.elasticsearch.action.ActionRequestValidationException: Validation Failed: 1: no requests added;
at org.elasticsearch.action.ValidateActions.addValidationError(ValidateActions.java:29)
at org.elasticsearch.action.bulk.BulkRequest.validate(BulkRequest.java:412)
at org.elasticsearch.action.support.TransportAction.execute(TransportAction.java:55)
at org.elasticsearch.action.bulk.TransportBulkAction$TransportHandler.messageReceived(TransportBulkAction.java:299)
at org.elasticsearch.action.bulk.TransportBulkAction$TransportHandler.messageReceived(TransportBulkAction.java:288)
at org.elasticsearch.transport.netty.MessageChannelHandler.handleRequest(MessageChannelHandler.java:207)
at org.elasticsearch.transport.netty.MessageChannelHandler.messageReceived(MessageChannelHandler.java:108)
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$DefaultChannelHandlerContext.sendUpstream(DefaultChannelPipeline.java:791)
at org.elasticsearch.common.netty.channel.Channels.fireMessageReceived(Channels.java:296)
at org.elasticsearch.common.netty.handler.codec.frame.FrameDecoder.unfoldAndFireMessageReceived(FrameDecoder.java:462)
at org.elasticsearch.common.netty.handler.codec.frame.FrameDecoder.callDecode(FrameDecoder.java:443)
at org.elasticsearch.common.netty.handler.codec.frame.FrameDecoder.messageReceived(FrameDecoder.java:303)
at org.elasticsearch.common.netty.channel.SimpleChannelUpstreamHandler.handleUpstream(SimpleChannelUpstreamHandler.java:70)
at org.elasticsearch.common.netty.channel.DefaultChannelPipeline.sendUpstream(DefaultChannelPipeline.java:564)
at org.elasticsearch.common.netty.channel.DefaultChannelPipeline$DefaultChannelHandlerContext.sendUpstream(DefaultChannelPipeline.java:791)
at org.elasticsearch.common.netty.OpenChannelsHandler.handleUpstream(OpenChannelsHandler.java:74)
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:109)
at org.elasticsearch.common.netty.channel.socket.nio.AbstractNioSelector.run(AbstractNioSelector.java:312)
at org.elasticsearch.common.netty.channel.socket.nio.AbstractNioWorker.run(AbstractNioWorker.java:90)
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$1.run(DeadLockProofWorker.java:42)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
at java.lang.Thread.run(Thread.java:662)

以下是我编写的代码。

    BulkRequestBuilder bulkRequestBuilder = client.prepareBulk();

    for (String documentId : documentIds)
    {
        bulkRequestBuilder.add(client.prepareUpdate("39302", "3", documentId).setScript("ctx._source.customerName=\"Ramaraj\";"));
    }

    BulkResponse bulkResponse = bulkRequestBuilder.execute().actionGet();

这与我为批量索引编写的方式相同。它工作正常。

提前致谢。

注意：java api中的批量更新仅在几天前添加。

Answer 1

正如例外所述，没有向BulkRequest对象添加任何请求。如果您在for循环中添加的记录实际上被添加到构建器对象，请进行调试。最近发现此帖子有同样的问题：ActionRequestValidationException

Answer 2

发生此异常是因为您的documentIds集合为空。

在发出请求之前，您应该检查您的集合（列表，队列等）是否包含文档。我昨天遇到了同样的问题，在我的情况下，弹性搜索插入发生在给定的间隔（比如5s），插入集合不是很空;

在我的情况下，这种情况非常罕见，很少发生（在我的情况下每天插入300万份文件），并且在投入生产之前可能难以识别。

我会像这样处理你的异常：

if(!documentIds.isEmpty())
{   
     BulkRequestBuilder bulkRequestBuilder = client.prepareBulk();

    for (String documentId : documentIds)
    {
        bulkRequestBuilder.add(client.prepareUpdate("39302", "3", documentId).setScript("ctx._source.customerName=\"Ramaraj\";"));
    }

    BulkResponse bulkResponse = bulkRequestBuilder.execute().actionGet();
}

Answer 3

错误是由于BulkRequestBuilder 的大小，没有请求。如果您的构建器包含任何Requests

，请进行调试

Answer 4

当您尝试保存或更新弹性搜索索引中的空对象时，通常会发生此异常。为此，首先检查Object是否为null，然后执行更新 查看我的代码快照：