---
title: "无法启动datafeed datafeedId，因为索引正在升级中 - 如何解决此Elasticsearch异常"
date: 2026-01-22
lastmod: 2026-01-22
description: "当Elasticsearch尝试启动datafeed时失败，因为某些索引正在进行升级操作。本文介绍该异常的原因及解决方案。"
tags: ["Elasticsearch异常", "datafeed", "索引升级"]
summary: "版本： 6.8-7.15
 简而言之，当Elasticsearch尝试启动datafeed但由于某些索引正在升级而无法启动时，就会出现此错误。这意味着系统正在更新索引的过程中，在此过程完成之前无法启动datafeed。要解决此问题，您可以等待升级过程完成，或者暂停升级，启动datafeed，然后恢复升级。然而，通常建议让升级完成，以避免潜在的数据不一致。
日志上下文 #  日志"Could not start datafeed [" + datafeedId +"] as indices are being upgraded"的类名是 DatafeedNodeSelector.java。我们从Elasticsearch源代码中提取了以下内容，供那些寻求深入上下文的人参考：
public void checkDatafeedTaskCanBeCreated() { if (MlMetadata.getMlMetadata(clusterState).isUpgradeMode()) { String msg = "Unable to start datafeed [" + datafeedId +"] explanation [" + AWAITING_UPGRADE.getExplanation() + "]"; LOGGER.debug(msg); Exception detail = new IllegalStateException(msg); throw new ElasticsearchStatusException("Could not start datafeed [" + datafeedId +"] as indices are being upgraded", RestStatus.TOO_MANY_REQUESTS, detail); } AssignmentFailure assignmentFailure = checkAssignment(); if (assignmentFailure !"
---


> **版本：** 6.8-7.15


简而言之，当Elasticsearch尝试启动datafeed但由于某些索引正在升级而无法启动时，就会出现此错误。这意味着系统正在更新索引的过程中，在此过程完成之前无法启动datafeed。要解决此问题，您可以等待升级过程完成，或者暂停升级，启动datafeed，然后恢复升级。然而，通常建议让升级完成，以避免潜在的数据不一致。

## 日志上下文

日志"Could not start datafeed [" + datafeedId +"] as indices are being upgraded"的类名是[DatafeedNodeSelector.java。](https://www.geeksforgeeks.org/java-lang-class-class-java-set-1/)我们从Elasticsearch源代码中提取了以下内容，供那些寻求深入上下文的人参考：

```java
public void checkDatafeedTaskCanBeCreated() {
 if (MlMetadata.getMlMetadata(clusterState).isUpgradeMode()) {
 String msg = "Unable to start datafeed [" + datafeedId +"] explanation [" + AWAITING_UPGRADE.getExplanation() + "]";
 LOGGER.debug(msg);
 Exception detail = new IllegalStateException(msg);
 throw new ElasticsearchStatusException("Could not start datafeed [" + datafeedId +"] as indices are being upgraded",
 RestStatus.TOO_MANY_REQUESTS, detail);
 }
 AssignmentFailure assignmentFailure = checkAssignment();
 if (assignmentFailure != null && assignmentFailure.isCriticalForTaskCreation) {
 String msg = "No node found to start datafeed [" + datafeedId + "]; " +
```