# Format version is not supported (resource BufferedChecksumIndexInput (SimpleFSIndexInput))

**URL:** <https://discuss.elastic.co/t/format-version-is-not-supported-resource-bufferedchecksumindexinput-simplefsindexinput/336390>\
**Category:** Elasticsearch\
**Tags:** reindex\
**Created:** [June 19, 2023, 3:55pm UTC](https://discuss.elastic.co/t/format-version-is-not-supported-resource-bufferedchecksumindexinput-simplefsindexinput/336390 "2023-06-19T15:55:38Z")\
**Posts on this page:** 3\
**Page:** 1

<div class="post-metadata">

**Author:** ![amal\_srivastava](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/amal_srivastava/32/122298_2.png) [@amal\_srivastava](https://discuss.elastic.co/u/amal_srivastava)\
**Post date:** [June 19, 2023, 3:55pm UTC](https://discuss.elastic.co/t/format-version-is-not-supported-resource-bufferedchecksumindexinput-simplefsindexinput/336390/1 "2023-06-19T15:55:38Z")

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Hi,

One of my elasticsearch index is red and when i dig this into deep i am getting this below error

```auto
GET _cluster/allocation/explain

```

{  
"index" : "design",  
"shard" : 0,  
"primary" : true,  
"current\_state" : "unassigned",  
"unassigned\_info" : {  
"reason" : "CLUSTER\_RECOVERED",  
"at" : "2023-06-19T09:58:16.814Z",  
"last\_allocation\_status" : "no\_valid\_shard\_copy"  
},  
"can\_allocate" : "no\_valid\_shard\_copy",  
"allocate\_explanation" : "cannot allocate because all found copies of the shard are either stale or corrupt",  
"node\_allocation\_decisions" : [  
{  
"node\_id" : "B8GDi6pHRa6NCpxRXTmK1A",  
"node\_name" : "127.0.0.1",  
"transport\_address" : "127.0.0.1:15155",  
"node\_decision" : "no",  
"store" : {  
"in\_sync" : true,  
"allocation\_id" : "Mt7w6tFXRYOpb4GunXEOuQ",  
"store\_exception" : {  
"type" : "index\_format\_too\_old\_exception",  
"reason" : """Format version is not supported (resource BufferedChecksumIndexInput(SimpleFSIndexInput(path="C:\Users\rishabh2\Pulse\atom\_v6\server\data\beehive\nodes\0\indices\z8SOcefcSKGCkdavUoS9Dg\0\index\segments\_5s"))): 1229866072 (needs to be between 1071082519 and 1071082519). This version of Lucene only supports indexes created with release 6.0 and later."""  
}  
}  
}  
]  
}

---

<div class="post-metadata">

**Author:** ![DavidTurner](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/davidturner/32/22453_2.png) [@DavidTurner](https://discuss.elastic.co/u/DavidTurner)\
**Post date:** [June 19, 2023, 8:49pm UTC](https://discuss.elastic.co/t/format-version-is-not-supported-resource-bufferedchecksumindexinput-simplefsindexinput/336390/2 "2023-06-19T20:49:27Z")

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Duplicates [Format version is not supported (resource BufferedChecksumIndexInput (SimpleFSIndexInput))](https://discuss.elastic.co/t/format-version-is-not-supported-resource-bufferedchecksumindexinput-simplefsindexinput/336348). Please don't open multiple threads on the same topic.

---

<div class="post-metadata">

**Author:** ![DavidTurner](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/davidturner/32/22453_2.png) [@DavidTurner](https://discuss.elastic.co/u/DavidTurner)\
**Post date:** [June 19, 2023, 8:51pm UTC](https://discuss.elastic.co/t/format-version-is-not-supported-resource-bufferedchecksumindexinput-simplefsindexinput/336390/3 "2023-06-19T20:51:13Z")

</div>

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