# Upgrade 6.8.4 -\> 7.4.2: forgot to reindex

**URL:** <https://discuss.elastic.co/t/upgrade-6-8-4-7-4-2-forgot-to-reindex/209874>\
**Category:** Elasticsearch\
**Created:** [November 28, 2019, 2:26pm UTC](https://discuss.elastic.co/t/upgrade-6-8-4-7-4-2-forgot-to-reindex/209874 "2019-11-28T14:26:12Z")\
**Posts on this page:** 8\
**Page:** 1

<div class="post-metadata">

**Author:** ![discostur](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/discostur/32/58501_2.png) [@discostur](https://discuss.elastic.co/u/discostur)\
**Post date:** [November 28, 2019, 2:26pm UTC](https://discuss.elastic.co/t/upgrade-6-8-4-7-4-2-forgot-to-reindex/209874/1 "2019-11-28T14:26:12Z")

</div>

Hi,

i just did a upgrade of my elasticsearch 6.8.4 installation (only one node!). I cant start elasticsearch now because i have old indices which i did not reindex before:

```auto
    The index [[index_xyz]] was created with version [5.0.1] but the minimum compatible version is [6.0.0-beta1]. It should be re-indexed in Elasticsearch 6.x before upgrading to 7.4.2.

```

If i try to downgrade to 6.8.4 which was installed before i cannot start either:

```auto
[2019-11-28T14:54:15,909][WARN][o.e.b.ElasticsearchUncaughtExceptionHandler] [unknown] uncaught exception in thread [main]
org.elasticsearch.bootstrap.StartupException: ElasticsearchException[java.io.IOException: failed to read [id:51, file:/var/lib/elasticsearch/elasticsearch/nodes/0/_state/node-51.st]]; nested: IOException[failed to read [id:51, file:/var/lib/elasticsearch/elasticsearch/nodes/0/_state/node-51.st]]; nested: XContentParseException[[-1:36] [node_meta_data] unknown field [node_version], parser not found];
    at org.elasticsearch.bootstrap.Elasticsearch.init(Elasticsearch.java:163) ~[elasticsearch-6.8.4.jar:6.8.4]
    at org.elasticsearch.bootstrap.Elasticsearch.execute(Elasticsearch.java:150) ~[elasticsearch-6.8.4.jar:6.8.4]
    at org.elasticsearch.cli.EnvironmentAwareCommand.execute(EnvironmentAwareCommand.java:86) ~[elasticsearch-6.8.4.jar:6.8.4]
    at org.elasticsearch.cli.Command.mainWithoutErrorHandling(Command.java:124) ~[elasticsearch-cli-6.8.4.jar:6.8.4]
    at org.elasticsearch.cli.Command.main(Command.java:90) ~[elasticsearch-cli-6.8.4.jar:6.8.4]
    at org.elasticsearch.bootstrap.Elasticsearch.main(Elasticsearch.java:116) ~[elasticsearch-6.8.4.jar:6.8.4]
    at org.elasticsearch.bootstrap.Elasticsearch.main(Elasticsearch.java:93) ~[elasticsearch-6.8.4.jar:6.8.4]
Caused by: org.elasticsearch.ElasticsearchException: java.io.IOException: failed to read [id:51, file:/var/lib/elasticsearch/elasticsearch/nodes/0/_state/node-51.st]
    at org.elasticsearch.ExceptionsHelper.maybeThrowRuntimeAndSuppress(ExceptionsHelper.java:165) ~[elasticsearch-6.8.4.jar:6.8.4]
    at org.elasticsearch.gateway.MetaDataStateFormat.loadLatestStateWithGeneration(MetaDataStateFormat.java:306) ~[elasticsearch-6.8.4.jar:6.8.4]
    at org.elasticsearch.gateway.MetaDataStateFormat.loadLatestState(MetaDataStateFormat.java:324) ~[elasticsearch-6.8.4.jar:6.8.4]
    at org.elasticsearch.env.NodeEnvironment.loadOrCreateNodeMetaData(NodeEnvironment.java:417) ~[elasticsearch-6.8.4.jar:6.8.4]
    at org.elasticsearch.env.NodeEnvironment.<init>(NodeEnvironment.java:305) ~[elasticsearch-6.8.4.jar:6.8.4]
    at org.elasticsearch.node.Node.<init>(Node.java:296) ~[elasticsearch-6.8.4.jar:6.8.4]
    at org.elasticsearch.node.Node.<init>(Node.java:266) ~[elasticsearch-6.8.4.jar:6.8.4]
    at org.elasticsearch.bootstrap.Bootstrap$5.<init>(Bootstrap.java:212) ~[elasticsearch-6.8.4.jar:6.8.4]
    at org.elasticsearch.bootstrap.Bootstrap.setup(Bootstrap.java:212) ~[elasticsearch-6.8.4.jar:6.8.4]
    at org.elasticsearch.bootstrap.Bootstrap.init(Bootstrap.java:333) ~[elasticsearch-6.8.4.jar:6.8.4]
    at org.elasticsearch.bootstrap.Elasticsearch.init(Elasticsearch.java:159) ~[elasticsearch-6.8.4.jar:6.8.4]
    ... 6 more
Caused by: java.io.IOException: failed to read [id:51, file:/var/lib/elasticsearch/elasticsearch/nodes/0/_state/node-51.st]
    at org.elasticsearch.gateway.MetaDataStateFormat.loadLatestStateWithGeneration(MetaDataStateFormat.java:300) ~[elasticsearch-6.8.4.jar:6.8.4]
    at org.elasticsearch.gateway.MetaDataStateFormat.loadLatestState(MetaDataStateFormat.java:324) ~[elasticsearch-6.8.4.jar:6.8.4]
    at org.elasticsearch.env.NodeEnvironment.loadOrCreateNodeMetaData(NodeEnvironment.java:417) ~[elasticsearch-6.8.4.jar:6.8.4]
    at org.elasticsearch.env.NodeEnvironment.<init>(NodeEnvironment.java:305) ~[elasticsearch-6.8.4.jar:6.8.4]
    at org.elasticsearch.node.Node.<init>(Node.java:296) ~[elasticsearch-6.8.4.jar:6.8.4]
    at org.elasticsearch.node.Node.<init>(Node.java:266) ~[elasticsearch-6.8.4.jar:6.8.4]
    at org.elasticsearch.bootstrap.Bootstrap$5.<init>(Bootstrap.java:212) ~[elasticsearch-6.8.4.jar:6.8.4]
    at org.elasticsearch.bootstrap.Bootstrap.setup(Bootstrap.java:212) ~[elasticsearch-6.8.4.jar:6.8.4]
    at org.elasticsearch.bootstrap.Bootstrap.init(Bootstrap.java:333) ~[elasticsearch-6.8.4.jar:6.8.4]
    at org.elasticsearch.bootstrap.Elasticsearch.init(Elasticsearch.java:159) ~[elasticsearch-6.8.4.jar:6.8.4]
    ... 6 more
Caused by: org.elasticsearch.common.xcontent.XContentParseException: [-1:36] [node_meta_data] unknown field [node_version], parser not found
    at org.elasticsearch.common.xcontent.ObjectParser.getParser(ObjectParser.java:369) ~[elasticsearch-x-content-6.8.4.jar:6.8.4]
    at org.elasticsearch.common.xcontent.ObjectParser.parse(ObjectParser.java:158) ~[elasticsearch-x-content-6.8.4.jar:6.8.4]
    at org.elasticsearch.common.xcontent.ObjectParser.apply(ObjectParser.java:182) ~[elasticsearch-x-content-6.8.4.jar:6.8.4]
    at org.elasticsearch.env.NodeMetaData$1.fromXContent(NodeMetaData.java:110) ~[elasticsearch-6.8.4.jar:6.8.4]
    at org.elasticsearch.env.NodeMetaData$1.fromXContent(NodeMetaData.java:94) ~[elasticsearch-6.8.4.jar:6.8.4]
    at org.elasticsearch.gateway.MetaDataStateFormat.read(MetaDataStateFormat.java:197) ~[elasticsearch-6.8.4.jar:6.8.4]
    at org.elasticsearch.gateway.MetaDataStateFormat.loadLatestStateWithGeneration(MetaDataStateFormat.java:296) ~[elasticsearch-6.8.4.jar:6.8.4]
    at org.elasticsearch.gateway.MetaDataStateFormat.loadLatestState(MetaDataStateFormat.java:324) ~[elasticsearch-6.8.4.jar:6.8.4]
    at org.elasticsearch.env.NodeEnvironment.loadOrCreateNodeMetaData(NodeEnvironment.java:417) ~[elasticsearch-6.8.4.jar:6.8.4]
    at org.elasticsearch.env.NodeEnvironment.<init>(NodeEnvironment.java:305) ~[elasticsearch-6.8.4.jar:6.8.4]
    at org.elasticsearch.node.Node.<init>(Node.java:296) ~[elasticsearch-6.8.4.jar:6.8.4]
    at org.elasticsearch.node.Node.<init>(Node.java:266) ~[elasticsearch-6.8.4.jar:6.8.4]
    at org.elasticsearch.bootstrap.Bootstrap$5.<init>(Bootstrap.java:212) ~[elasticsearch-6.8.4.jar:6.8.4]
    at org.elasticsearch.bootstrap.Bootstrap.setup(Bootstrap.java:212) ~[elasticsearch-6.8.4.jar:6.8.4]
    at org.elasticsearch.bootstrap.Bootstrap.init(Bootstrap.java:333) ~[elasticsearch-6.8.4.jar:6.8.4]
    at org.elasticsearch.bootstrap.Elasticsearch.init(Elasticsearch.java:159) ~[elasticsearch-6.8.4.jar:6.8.4]

```

How can i get my elasticsearch running again that i can reindex the indices?

Thanks,  
Greets  
Kilian

---

<div class="post-metadata">

**Author:** ![dadoonet](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/dadoonet/32/137187_2.png) [@dadoonet](https://discuss.elastic.co/u/dadoonet)\
**Post date:** [November 28, 2019, 2:38pm UTC](https://discuss.elastic.co/t/upgrade-6-8-4-7-4-2-forgot-to-reindex/209874/2 "2019-11-28T14:38:14Z")

</div>

You can't downgrade a cluster.  
I suggest you restore the last backup you took or reindex from the source.

---

<div class="post-metadata">

**Author:** ![discostur](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/discostur/32/58501_2.png) [@discostur](https://discuss.elastic.co/u/discostur)\
**Post date:** [November 28, 2019, 2:51pm UTC](https://discuss.elastic.co/t/upgrade-6-8-4-7-4-2-forgot-to-reindex/209874/3 "2019-11-28T14:51:35Z")

</div>

How can i reindex from source?

---

<div class="post-metadata">

**Author:** ![discostur](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/discostur/32/58501_2.png) [@discostur](https://discuss.elastic.co/u/discostur)\
**Post date:** [November 28, 2019, 3:21pm UTC](https://discuss.elastic.co/t/upgrade-6-8-4-7-4-2-forgot-to-reindex/209874/4 "2019-11-28T15:21:29Z")

</div>

Ok i were able to start elasticsearch 7.4.2 but i had to move the "broken" (not reindexed) indices out of the elasticsearch data location.

My plan now is to reindex the data within a docker 6.8 image:

```auto
docker run -it --rm -e "discovery.type=single-node" -e "ES_JAVA_OPTS=-Xms4096m -Xmx4096m" -v /opt/old_data:/usr/share/elasticsearch/data elasticsearch:6.8.4

```

But when i start the container it shows me 0 shards / indices. Is there a way to "import" the old data to a fresh elasticsearch container and do the reindex and then move the data back to my 7.4 cluster?

---

<div class="post-metadata">

**Author:** ![dadoonet](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/dadoonet/32/137187_2.png) [@dadoonet](https://discuss.elastic.co/u/dadoonet)\
**Post date:** [November 28, 2019, 3:32pm UTC](https://discuss.elastic.co/t/upgrade-6-8-4-7-4-2-forgot-to-reindex/209874/5 "2019-11-28T15:32:00Z")

</div>

The same way you indexed your data initially.

---

<div class="post-metadata">

**Author:** ![dadoonet](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/dadoonet/32/137187_2.png) [@dadoonet](https://discuss.elastic.co/u/dadoonet)\
**Post date:** [November 28, 2019, 3:33pm UTC](https://discuss.elastic.co/t/upgrade-6-8-4-7-4-2-forgot-to-reindex/209874/6 "2019-11-28T15:33:24Z")

</div>

> [@discostur](#):
>
> Is there a way to "import" the old data to a fresh elasticsearch container and do the reindex and then move the data back to my 7.4 cluster?

I think you already started Elasticsearch on this data dir using a 7.x version. So I said, you can not downgrade later to another version.  
You need to start a 6.x version and restore the backup you took.

---

<div class="post-metadata">

**Author:** ![discostur](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/discostur/32/58501_2.png) [@discostur](https://discuss.elastic.co/u/discostur)\
**Post date:** [December 3, 2019, 2:14pm UTC](https://discuss.elastic.co/t/upgrade-6-8-4-7-4-2-forgot-to-reindex/209874/7 "2019-12-03T14:14:55Z")

</div>

ok, thanks! we started to re-import / index the data from source.

---

<div class="post-metadata">

**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [December 31, 2019, 2:14pm UTC](https://discuss.elastic.co/t/upgrade-6-8-4-7-4-2-forgot-to-reindex/209874/8 "2019-12-31T14:14:57Z")

</div>

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