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Java SSTableReader.getEstimatedRowSize方法代码示例

本文整理汇总了Java中org.apache.cassandra.io.sstable.SSTableReader.getEstimatedRowSize方法的典型用法代码示例。如果您正苦于以下问题:Java SSTableReader.getEstimatedRowSize方法的具体用法?Java SSTableReader.getEstimatedRowSize怎么用?Java SSTableReader.getEstimatedRowSize使用的例子?那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在org.apache.cassandra.io.sstable.SSTableReader的用法示例。


在下文中一共展示了SSTableReader.getEstimatedRowSize方法的2个代码示例,这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞,您的评价将有助于系统推荐出更棒的Java代码示例。

示例1: getSSTableMetadata

import org.apache.cassandra.io.sstable.SSTableReader; //导入方法依赖的package包/类
public List<SSTableMetadata> getSSTableMetadata(String ksName, String cfName) {
    ColumnFamilyStore cfStore = getStore(ksName, cfName);
    Collection<SSTableReader> tables = cfStore.getSSTables();
    List<SSTableMetadata> metaData = new ArrayList<>(tables.size());
    for (SSTableReader table : tables) {
        SSTableMetadata tableMetadata = new SSTableMetadata();
        File dataFile = new File(table.descriptor.filenameFor(Component.DATA));
        tableMetadata.filename = dataFile.getName();
        tableMetadata.generation = table.descriptor.generation;
        try {
            tableMetadata.fileTimestamp = Files.getLastModifiedTime(dataFile.toPath()).toMillis();
        } catch (IOException e) {
            tableMetadata.fileTimestamp = 0;
        }
        tableMetadata.minTimestamp = table.getMinTimestamp();
        tableMetadata.maxTimestamp = table.getMaxTimestamp();
        tableMetadata.diskLength = table.onDiskLength();
        tableMetadata.uncompressedLength = table.uncompressedLength();
        tableMetadata.keys = table.estimatedKeys();
        EstimatedHistogram rowSizeHistogram = table.getEstimatedRowSize();
        tableMetadata.maxRowSize = rowSizeHistogram.max();
        tableMetadata.avgRowSize = rowSizeHistogram.mean();
        EstimatedHistogram columnCountHistogram = table.getEstimatedColumnCount();
        tableMetadata.maxColumnCount = columnCountHistogram.max();
        tableMetadata.avgColumnCount = columnCountHistogram.mean();
        tableMetadata.droppableTombstones = table.getDroppableTombstonesBefore(Util.NOW_SECONDS - table.metadata.getGcGraceSeconds());
        tableMetadata.level = table.getSSTableLevel();
        tableMetadata.isRepaired = table.isRepaired();
        tableMetadata.repairedAt = table.getSSTableMetadata().repairedAt;
        metaData.add(tableMetadata);
    }
    return metaData;
}
 
开发者ID:instaclustr,项目名称:cassandra-sstable-tools,代码行数:34,代码来源:CassandraBackend.java

示例2: getSSTableMetadata

import org.apache.cassandra.io.sstable.SSTableReader; //导入方法依赖的package包/类
public List<SSTableMetadata> getSSTableMetadata(String ksName, String cfName) {
    ColumnFamilyStore cfStore = getStore(ksName, cfName);
    Collection<SSTableReader> tables = cfStore.getSSTables();
    List<SSTableMetadata> metaData = new ArrayList<>(tables.size());
    for (SSTableReader table : tables) {
        SSTableMetadata tableMetadata = new SSTableMetadata();
        File dataFile = new File(table.descriptor.filenameFor(Component.DATA));
        tableMetadata.filename = dataFile.getName();
        tableMetadata.generation = table.descriptor.generation;
        try {
            tableMetadata.fileTimestamp = Files.getLastModifiedTime(dataFile.toPath()).toMillis();
        } catch (IOException e) {
            tableMetadata.fileTimestamp = 0;
        }
        tableMetadata.minTimestamp = table.getMinTimestamp();
        tableMetadata.maxTimestamp = table.getMaxTimestamp();
        tableMetadata.diskLength = table.onDiskLength();
        tableMetadata.uncompressedLength = table.uncompressedLength();
        tableMetadata.keys = table.estimatedKeys();
        EstimatedHistogram rowSizeHistogram = table.getEstimatedRowSize();
        tableMetadata.maxRowSize = rowSizeHistogram.max();
        tableMetadata.avgRowSize = rowSizeHistogram.mean();
        EstimatedHistogram columnCountHistogram = table.getEstimatedColumnCount();
        tableMetadata.maxColumnCount = columnCountHistogram.max();
        tableMetadata.avgColumnCount = columnCountHistogram.mean();
        tableMetadata.droppableTombstones = table.getDroppableTombstonesBefore(Util.NOW_SECONDS - table.metadata.getGcGraceSeconds());
        tableMetadata.level = table.getSSTableLevel();
        tableMetadata.isRepaired = false;
        metaData.add(tableMetadata);
    }
    return metaData;
}
 
开发者ID:instaclustr,项目名称:cassandra-sstable-tools,代码行数:33,代码来源:CassandraBackend.java


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