版本： 6.8-8.9
简而言之，当Elasticsearch中的分片在恢复过程中被关闭，从而导致恢复被取消时，就会发生此错误。这可能是由于节点离开或加入集群，或者是由于手动干预造成的。要解决此问题，你可以尝试重启Elasticsearch节点，或使用集群重新路由API手动重新路由分片。如果问题仍然存在，请检查集群健康状况，确保节点或网络不存在潜在问题。
日志上下文 #
日志"shard is closed and recovery was canceled reason [" + reason + “]“的类名是 RecoverySourceHandler.java。 我们从Elasticsearch源代码中提取了以下内容，以便为那些寻求深入上下文的人提供参考：
final Closeable releaseResources = () -> IOUtils.close(resources);
try {
cancellableThreads.setOnCancel((reason; beforeCancelEx) -> {
final RuntimeException e;
if (shard.state() == IndexShardState.CLOSED) { // check if the shard got closed on us
e = new IndexShardClosedException(shard.shardId(); "shard is closed and recovery was canceled reason [" + reason + "]");
} else {
e = new CancellableThreads.ExecutionCancelledException("recovery was canceled reason [" + reason + "]");
}
if (beforeCancelEx != null) {
e.addSuppressed(beforeCancelEx);
