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  • HBase 清空表数据

        public int clearTableByTableName(String tableName) throws Exception {
            logger.debug("======InitHbaseServiceImpl clearTableByTableName=======");
            int count = 0;
            List<HBaseRow> rowsList = hbaseUtil.getRowsByStartAndEnd(tableName, null, null, HBaseConsts.FILTER_RECORD_COUNT);
            count += deleteData(tableName, rowsList, 0); //解决返回查找第一条为前一页最后一条数据
            while (rowsList.size() == HBaseConsts.FILTER_RECORD_COUNT) {
                String startKey = rowsList.get(rowsList.size() - 1).getRowKey();
                rowsList.clear();
                try {
                    rowsList = hbaseUtil.getRowsByStartAndEnd(tableName, startKey, null, HBaseConsts.FILTER_RECORD_COUNT);
                } catch (Exception e) {
                    logger.error("==========获取" + tableName + "数据异常==========");
                }
                count += deleteData(tableName, rowsList, 1);
                if (rowsList.size() < HBaseConsts.FILTER_RECORD_COUNT) {
                    break;
                }
            }
            return count;
        }
    
        /**
         * 删除数据
         *
         * @param tableName
         * @param rowsList
         * @param startIdx
         * @throws Exception
         */
        private int deleteData(String tableName, List<HBaseRow> rowsList, int startIdx) throws Exception {
            logger.debug("=======deleteData rowsList:{}========", rowsList.size());
            int successCount = 0;
            for (int i = startIdx; i < rowsList.size(); i++) {
                HBaseRow baseRow = rowsList.get(i);
                String rowKey = baseRow.getRowKey();
                try {
                    hbaseUtil.deleteRow(tableName, rowKey);
                    successCount++;
                } catch (Exception e) {
                    logger.error("=====清数据出现异常bug=====");
                    throw new InvokeException(ResultEnum.FAILED.getCode(), "清数据出现异常bug");
                }
    
            }
            logger.debug("==========deleteData========本次删除成功数据:{}", successCount);
            return successCount;
        }
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  • 原文地址:https://www.cnblogs.com/zgzf/p/10194385.html
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