java-datastore: LocalDatastoreHelper is downloading datastore emulator zip every time even when file exists

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#12,058 创建于 2026年3月9日 1 条评论 0 个 reaction 已指派 0 人在 GitHub 查看

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难度: 1/5
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新手友好度: 65/100

Issue 类型: 缺陷
描述清晰度: 描述清楚
活跃度: 冷清
技术栈: java
领域: databases

调研方向

从 java-datastore/google-cloud-datastore/src/main/java/com/google/cloud/datastore/testing/LocalDatastoreHelper.java 开始，然后将传递给 BaseEmulatorHelper.java 的校验和与文档中记录的 MD5 进行比较。当校验和与 7c1f5a3276241a8f78cb1a837daaaa47 匹配，并且现有的 emulator zip 不会再次下载时，即表示完成。

由索引模型根据 Issue 内容生成。

描述

api: datastore priority: p3 type: bug

When the LocalDatastoreHelper is started with .start() API it is downloading a 36mb zip file from http://storage.googleapis.com/gcd/tools/cloud-datastore-emulator-2.3.1.zip every time even if file already exist locally.

This is due to checksum mismatch at:

https://github.com/googleapis/sdk-platform-java/blob/56aa3438393e1992bb8f688291fb12030ec9bc0e/java-core/google-cloud-core/src/main/java/com/google/cloud/testing/BaseEmulatorHelper.java#L465-L479

The checksum value that LocalDatastoreHelper is passing down is not correct:

https://github.com/googleapis/google-cloud-java/blob/aa2c24982903071ab0408fac4357fb8dd067a3fa/java-datastore/google-cloud-datastore/src/main/java/com/google/cloud/datastore/testing/LocalDatastoreHelper.java#L68

The actual file checksum is 7c1f5a3276241a8f78cb1a837daaaa47:

> curl http://storage.googleapis.com/gcd/tools/cloud-datastore-emulator-2.3.1.
zip | md5sum
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
100 36.1M  100 36.1M    0     0  8831k      0  0:00:04  0:00:04 --:--:-- 8833k
7c1f5a3276241a8f78cb1a837daaaa47  -

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