void updateCachedData(TsBlock tsBlock) {
    cachedTsBlock.add(tsBlock);
    cachedRowIndex.add(currentRowIndex);
    cachedLastRowIndexForNonNullHelperColumn.add(getLastRowIndexForNonNullHelperColumn(tsBlock));
    currentRowIndex += tsBlock.getPositionCount();
  }
Try to get next TsBlock

@return true if we succeed to get next TsBlock and add it into cachedTsBlock, otherwise false
@throws Exception errors happened while getting next batch data
iotdb-core/datanode/src/main/java/org/apache/iotdb/db/queryengine/execution/operator/process/AbstractLinearFillOperator.java