list-shard 显示的分片多于配置的分片

Question

我有一个包含 4 个分片的运动数据流。但是，当我使用以下命令时：

aws kinesis list-shards \                                                      
    --stream-name stream --region us-east-1

我收到更多碎片回复：

{
    "Shards": [
        {
            "ShardId": "shardId-000000000000",
            "HashKeyRange": {
                "StartingHashKey": "0",
                "EndingHashKey": "340282366920938463463374607431768211455"
            },
            "SequenceNumberRange": {
                "StartingSequenceNumber": "49629197963553601158578444092147254587573454320158375938",
                "EndingSequenceNumber": "49629197963564751531177709403716813520960387136782073858"
            }
        },
        {
            "ShardId": "shardId-000000000001",
            "ParentShardId": "shardId-000000000000",
            "HashKeyRange": {
                "StartingHashKey": "0",
                "EndingHashKey": "170141183460469231731687303715884105727"
            },
            "SequenceNumberRange": {
                "StartingSequenceNumber": "49629562583971205188053748556663691537888312852092026898",
                "EndingSequenceNumber": "49629562583982355560653013868233250471205027557631066130"
            }
        },
        {
            "ShardId": "shardId-000000000002",
            "ParentShardId": "shardId-000000000000",
            "HashKeyRange": {
                "StartingHashKey": "170141183460469231731687303715884105728",
                "EndingHashKey": "340282366920938463463374607431768211455"
            },
            "SequenceNumberRange": {
                "StartingSequenceNumber": "49629562583993505933252279179805227256160961213598007330",
                "EndingSequenceNumber": "49629562584004656305851544491374786189477675919137046562"
            }
        },
        {
            "ShardId": "shardId-000000000003",
            "ParentShardId": "shardId-000000000001",
            "HashKeyRange": {
                "StartingHashKey": "0",
                "EndingHashKey": "85070591730234615865843651857942052863"
            },
            "SequenceNumberRange": {
                "StartingSequenceNumber": "49629562611133512839864047543054196393974022389056405554"
            }
        },
        {
            "ShardId": "shardId-000000000004",
            "ParentShardId": "shardId-000000000001",
            "HashKeyRange": {
                "StartingHashKey": "85070591730234615865843651857942052864",
                "EndingHashKey": "170141183460469231731687303715884105727"
            },
            "SequenceNumberRange": {
                "StartingSequenceNumber": "49629562611155813585062578166195732112246670750562385986"
            }
        },
        {
            "ShardId": "shardId-000000000005",
            "ParentShardId": "shardId-000000000002",
            "HashKeyRange": {
                "StartingHashKey": "170141183460469231731687303715884105728",
                "EndingHashKey": "255211775190703847597530955573826158591"
            },
            "SequenceNumberRange": {
                "StartingSequenceNumber": "49629562611178114330261108789337267830519319112068366418"
            }
        },
        {
            "ShardId": "shardId-000000000006",
            "ParentShardId": "shardId-000000000002",
            "HashKeyRange": {
                "StartingHashKey": "255211775190703847597530955573826158592",
                "EndingHashKey": "340282366920938463463374607431768211455"
            },
            "SequenceNumberRange": {
                "StartingSequenceNumber": "49629562611200415075459639412478803548791967473574346850"
            }
        }
    ]
}

为什么我看到的分片多于预配置的分片？我正在检查分片的哈希范围，以确定它们是否均匀分布，但我很困惑为什么我看到更多分片或它们来自哪里。任何想法都会有帮助。

Answer 1

好吧，我明白了。它显示了所有分片，包括已拆分的父分片。如果您只想获取活动分片，请检查

EndingSequenceNumber

响应。带有

EndingSequenceNumber

的分片是紧密分片。所以在这里我只有 4 个分片，它们不是

EndingSequenceNumber

因此是活跃分片。

Answer 2

仅显示打开的分片的另一种方法是使用

--shard-filter Type=AT_LATEST

参数，正如 Steve 在评论中提到的。