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  • Query API

    4651 2024-05-25 《Apache JDO 3.2.1》
    Creating a query Closing a query Named Query Saving a Query as a Named Query Query Extensions Setting query parameters Compiling a query Executing a query Result Class Con...
  • Iterators

    4623 2024-06-22 《Apache Accumulo 2.x》
    Instantiation Interface init seek next hasTop getTopKey and getTopValue deepCopy Yielding Interface enableYielding TabletServer invocation of Iterators Isolation Abstra...
  • Troubleshooting

    4567 2024-07-01 《Apache Hudi 0.15.0》
    Writing Tables org.apache.parquet.io.InvalidRecordException: Parquet/Avro schema mismatch: Avro field ‘col1’ not found java.lang.UnsupportedOperationException: org.apache.parquet....
  • 2.2. How To Use Spark Adaptive Query Execution (AQE) in Kyuubi

    How To Use Spark Adaptive Query Execution (AQE) in Kyuubi The Basics of AQE Dynamically Switch Join Strategies Dynamically Coalesce Shuffle Partitions Other Tips for Best Practise...
  • Setup

    4514 2024-06-21 《Apache Accumulo 2.x》
    User Manual (2.x and 3.x) Master/Manager naming Setup for testing or development Setup for Production Configuring Accumulo Initialization Run Accumulo Run individual Accumulo...
  • SQL DDL

    4508 2024-06-30 《Apache Hudi 0.15.0》
    Spark SQL Create table Create non-partitioned table Create partitioned table Create table with record keys and ordering fields Create table from an external location Create Ta...
  • Design

    4494 2024-06-21 《Apache Accumulo 2.x》
    Background Data Model Architecture Components Tablet Server Garbage Collector Manager Tracer Monitor Compactor (experimental) Compaction Coordinator (experimental) Scan S...
  • CLI

    4482 2024-07-01 《Apache Hudi 0.15.0》
    Local set up Hudi CLI Bundle setup Using hudi-cli Inspecting Commits Drilling Down to a specific Commit FileSystem View Statistics Archived Commits Compactions Validate Com...
  • Design & Concepts

    4459 2024-07-01 《Apache Hudi 0.15.0》
    How does Hudi ensure atomicity? Does Hudi extend the Hive table layout? What concurrency control approaches does Hudi adopt? Hudi’s commits are based on transaction start time i...
  • Java API

    4455 2024-06-29 《Apache Iceberg 1.5.2》
    Tables Table metadata Scanning File level Transactions Types Primitives Nested types Expressions Expression binding Expression example Modules Tables The main purpose...