Examples with MutateHelper org.apache.hadoop.hive.common.io.DiskRangeList.MutateHelper used on opensource projects

Example 6 with MutateHelper

use of org.apache.hadoop.hive.common.io.DiskRangeList.MutateHelper in project hive by apache.

the class OrcFileEstimateErrors method getIncompleteCbs.

public DiskRangeList getIncompleteCbs(DiskRangeList ranges, long baseOffset, BooleanRef gotAllData) {
    DiskRangeList prev = ranges.prev;
    if (prev == null) {
        prev = new MutateHelper(ranges);
    }
    DiskRangeList current = ranges;
    // Assume by default that we would find everything.
    gotAllData.value = true;
    while (current != null) {
        // We assume ranges in "ranges" are non-overlapping; thus, we will save next in advance.
        DiskRangeList check = current;
        current = current.next;
        if (check.hasData())
            continue;
        Integer badLength = cache.get(Long.valueOf(check.getOffset() + baseOffset));
        if (badLength == null || badLength < check.getLength()) {
            gotAllData.value = false;
            continue;
        }
        // We could just remove here and handle the missing tail during read, but that can be
        // dangerous; let's explicitly add an incomplete CB.
        check.replaceSelfWith(new IncompleteCb(check.getOffset(), check.getEnd()));
    }
    return prev.next;
}