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datalake_agent: Hadoop (filesystem) catalog

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难度
4/5
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3-5 天
新手友好度
52/100
Issue 类型
功能
描述清晰度
基本清楚
活跃度
活跃
技术栈
hadoop, spark

调研方向

Start with dependency B3 and the existing hadoop server-type whitelist route, then trace the volume warehouse path, version-hint handling, namespaces, and FileIO. Run the conformance suite on local FS and MinIO, verify Spark opens the same warehouse path, and add the concurrent-commit test whose outcome documents the S3 limitation.

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描述

datalake

Part of #2008. Letters (A, B0–B7, C, D, E) are the PRs listed there; this is B7.

Scope
  • HadoopCatalog over the volume's warehouse path (version-hint.text per table), FileIO from the volume; namespaces are directories. The hadoop server type already in the whitelist routes here.
  • Documented limit: commits rely on an atomic rename, which object stores lack, so concurrent writers to one table are unsafe on S3. Documentation only, no warning at CREATE SERVER.
  • End-to-end on local FS and on MinIO, including a test that shows what two concurrent commits do on each.
Out of scope

HDFS as storage (follow-up of A).

Depends on

B3.

Acceptance
  • Conformance suite green on local FS and MinIO; Spark opens the same warehouse path.
  • The S3 concurrent-commit behaviour is documented from the test's outcome.
主要语言
C
星标
1.4k
派生
248
平均合并
4 天 10 小时
30 天内合并 PR
40

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