LongComparator 在带有 HBase API 的 Google Cloud Bigtable 中不起作用

Question

我正在尝试构建一些过滤器来过滤 Bigtable 中的数据。我正在使用bigtable-hbase 驱动程序和 HBase 驱动程序。其实这里是我来自pom.xml的依赖：

    <dependency>
        <groupId>org.apache.hbase</groupId>
        <artifactId>hbase-common</artifactId>
        <version>${hbase.version}</version>
    </dependency>
    <dependency>
        <groupId>org.apache.hbase</groupId>
        <artifactId>hbase-protocol</artifactId>
        <version>${hbase.version}</version>
    </dependency>
    <dependency>
        <groupId>org.apache.hbase</groupId>
        <artifactId>hbase-client</artifactId>
        <version>${hbase.version}</version>
    </dependency>
    <dependency>
        <groupId>org.apache.hbase</groupId>
        <artifactId>hbase-server</artifactId>
        <version>${hbase.version}</version>
    </dependency>

    <dependency>
        <groupId>com.google.cloud.bigtable</groupId>
        <artifactId>bigtable-hbase</artifactId>
        <version>${bigtable.version}</version>
    </dependency>

我正在过滤这样的数据：

Filter filterName  = new SingleColumnValueFilter(Bytes.toBytes("FName"), Bytes.toBytes("FName"),
                CompareFilter.CompareOp.EQUAL, new RegexStringComparator("JOHN"));
FilterList filters = new FilterList();

filters.addFilter(filterName);

Scan scan1 = new Scan();
scan1.setFilter(filters);

这工作正常。但后来我在前面的代码中添加了以下内容：

Filter filterSalary = new SingleColumnValueFilter(Bytes.toBytes("Salary"), Bytes.toBytes("Salary"),
                CompareFilter.CompareOp.GREATER_OR_EQUAL, new LongComparator(100000));
filters.addFilter(filterSalary);

它给了我这个例外：

Exception in thread "main" com.google.cloud.bigtable.hbase.adapters.filters.UnsupportedFilterException: Unsupported filters encountered: FilterSupportStatus{isSupported=false, reason='ValueFilter must have either a BinaryComparator with any compareOp or a RegexStringComparator with an EQUAL compareOp. Found (LongComparator, GREATER_OR_EQUAL)'}
at com.google.cloud.bigtable.hbase.adapters.filters.FilterAdapter.throwIfUnsupportedFilter(FilterAdapter.java:144)
at com.google.cloud.bigtable.hbase.adapters.ScanAdapter.throwIfUnsupportedScan(ScanAdapter.java:55)
at com.google.cloud.bigtable.hbase.adapters.ScanAdapter.adapt(ScanAdapter.java:91)
at com.google.cloud.bigtable.hbase.adapters.ScanAdapter.adapt(ScanAdapter.java:43)
at com.google.cloud.bigtable.hbase.BigtableTable.getScanner(BigtableTable.java:247)

所以我的问题是如何过滤长数据类型？是 hbase 问题还是 bigtable 问题？

我找到了这个How do you use a custom comparator with SingleColumnValueFilter on HBase?，但我无法将我的 jar 加载到服务器，所以它不适用于我的情况。

Answer 1

SingleColumnValueFilter 支持以下比较器：

• BinaryComparator
• BinaryPrefixComparator
• RegexStringComparator。

查看此链接以获取最新列表：

https://cloud.google.com/bigtable/docs/hbase-differences