Trying to use for Android but keep getting No DefaultAllocationManager found on classpath
还没有人认领这个 Issue。
评估
- 难度
- 4/5
- 预计耗时
- 3-5 天
- 新手友好度
- 35/100
- Issue 类型
- 缺陷
- 描述清晰度
- 基本清楚
- 活跃度
- 停滞
- 领域
- mobile-dev
调研方向
首先使用列出的 arrow-vector、arrow-memory-core、arrow-memory-unsafe 和 arrow-memory-netty 依赖,在 Android 上通过 DataFrame.readArrowFeather、RootAllocator 和 ArrowStreamReader 重现故障。跟踪 DefaultAllocationManager 在运行时未找到的原因,并验证是否支持 Android。当 Arrow 流和文件解析能够在 Android 上运行且不再出现 allocation-manager 错误时,即视为完成。
由索引模型根据 Issue 内容生成。
描述
Describe the bug, including details regarding any error messages, version, and platform.
I have all the dependencies in place, code compiles just fine but when I run it and attempt to parse from an arrow stream like this (or using any of the parsers like from a file)
val df = DataFrame.readArrowFeather(channel.toInputStream(null))
I always get
Caused by: java.lang.RuntimeException: No DefaultAllocationManager found on classpath. Can't allocate Arrow buffers. Please consider adding arrow-memory-netty or arrow-memory-unsafe as a dependency.
Same for
val rootAllocator = RootAllocator()
val fileInputStream = FileInputStream(File(filepath))
val arrowReader = ArrowStreamReader(fileInputStream, rootAllocator)
Asking Gradle for my arrow dependencies I see
| +--- org.jetbrains.kotlinx:dataframe-arrow:1.0.0-dev-7570
| | +--- org.apache.arrow:arrow-vector:18.1.0
| | | +--- org.apache.arrow:arrow-format:18.1.0
| | | +--- org.apache.arrow:arrow-memory-core:18.1.0
| | +--- org.apache.arrow:arrow-format:18.1.0 ()
| | +--- org.apache.arrow:arrow-memory-unsafe:18.1.0
| | | --- org.apache.arrow:arrow-memory-core:18.1.0 ()
+--- org.jetbrains.kotlinx:dataframe-arrow:1.0.0-dev-7570 ()
+--- org.apache.arrow:arrow-memory-unsafe:18.1.0 ()
This happens even if I don't use org.jetbrains.kotlinx.dataframe and just call the Apache Arrow parser directly as seen in second code example above.
I have tried adding both arrow-memory-unsage and arrow-memory-netty with the same result. I have been beating my head against a wall for the last few days. Is Android supported with this library? The data from the server comes to me in arrow-stream format so I need to be able to parse it to shows charts.
I have been able to parse the data just fine with Python and the web team is parsing it as well. I need to do this for Native Android and Native iOS.
Component(s)
Integration
- 主要语言
- Java
- 星标
- 95
- 派生
- 154
- 平均合并
- 2 天 10 小时
- 30 天内合并 PR
- 11
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apache/arrow-java#1196 · 1 条评论 ·
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