我的索引中的文档中有两个字段：
字段1：消息
消息字段包含帖子内容，分析字符串字段
字段2：字
单词字段包含消息中的所有标记（单词），它是一个多值字段。
当我运行以下聚合时，在消息字段中，我得到超时：
"aggs" : {
"word_count" : {
"terms" : {
"field" : "message"
}
}
}
当我运行上述聚合时，在单词字段中，它可以工作：
"aggs" : {
"word_count" : {
"terms" : {
"field" : "words"
}
}
}
阅读弹性文档，这两个字段是反向索引。
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为什么会这样？