标签：version failed 相同 style sys nal 修改 engine conf
GET /test_version/test_version_type/1
{ "_index" : "test_version", "_type" : "test_version_type", "_id" : "1", "_version" : 1, "found" : true, "_source" : { "test_field" : "test test" } }
同时带上数据的版本号，确保说，es中的数据的版本号，跟客户端中的数据的版本号是相同的，才能修改
PUT /test_version/test_version_type/1?version=1 { "test_field": "test client 1" } { "_index" : "test_version", "_type" : "test_version_type", "_id" : "1", "_version" : 2, "result" : "updated", "_shards" : { "total" : 2, "successful" : 1, "failed" : 0 }, "_seq_no" : 1, "_primary_term" : 1 }
PUT /test_version/test_version_type/1?version=1 { "test_field": "test client 2" } { "error": { "root_cause": [ { "type": "version_conflict_engine_exception", "reason": "[test_version_type][1]: version conflict, current version [2] is different than the one provided [1]", "index_uuid": "VT8uFhvTS_qawAksysahtQ", "shard": "3", "index": "test_version" } ], "type": "version_conflict_engine_exception", "reason": "[test_version_type][1]: version conflict, current version [2] is different than the one provided [1]", "index_uuid": "VT8uFhvTS_qawAksysahtQ", "shard": "3", "index": "test_version" }, "status": 409 }
es提供了一个feature，就是说，你可以不用它提供的内部_version版本号来进行并发控制，可以基于你自己维护的一个版本号来进行并发控制。
GET /test_version/test_version_type/2 { "_index" : "test_version", "_type" : "test_version_type", "_id" : "2", "_version" : 1, "found" : true, "_source" : { "test_field" : "test" } }
?version=1
?version=1&version_type=external
version_type=external，唯一的区别在于，_version，只有当你提供的version与es中的_version一模一样的时候，才可以进行修改，只要不一样，就报错；当version_type=external的时候，只有当你提供的version比es中的_version大的时候，才能完成修改
PUT /test_version/test_version_type/3?version=2&version_type=external { "test_field": "test client 1" } { "_index" : "test_version", "_type" : "test_version_type", "_id" : "3", "_version" : 2, "result" : "updated", "_shards" : { "total" : 2, "successful" : 1, "failed" : 0 }, "_seq_no" : 1, "_primary_term" : 1 }
PUT /test_version/test_version_type/3?version=2&version_type=external { "test_field": "test client 2" } { "error": { "root_cause": [ { "type": "version_conflict_engine_exception", "reason": "[test_version_type][3]: version conflict, current version [2] is higher or equal to the one provided [2]", "index_uuid": "VT8uFhvTS_qawAksysahtQ", "shard": "4", "index": "test_version" } ], "type": "version_conflict_engine_exception", "reason": "[test_version_type][3]: version conflict, current version [2] is higher or equal to the one provided [2]", "index_uuid": "VT8uFhvTS_qawAksysahtQ", "shard": "4", "index": "test_version" }, "status": 409 }
ElasticSearch（九）基于version进行乐观锁并发控制
标签：version failed 相同 style sys nal 修改 engine conf
原文地址：https://www.cnblogs.com/ql211lin/p/10271123.html
