本文整理汇总了Java中org.apache.hadoop.hdfs.server.namenode.FSEditLogOpCodes.OP_START_LOG_SEGMENT属性的典型用法代码示例。如果您正苦于以下问题：Java FSEditLogOpCodes.OP_START_LOG_SEGMENT属性的具体用法？Java FSEditLogOpCodes.OP_START_LOG_SEGMENT怎么用？Java FSEditLogOpCodes.OP_START_LOG_SEGMENT使用的例子？那么恭喜您, 这里精选的属性代码示例或许可以为您提供帮助。您也可以进一步了解该属性所在类org.apache.hadoop.hdfs.server.namenode.FSEditLogOpCodes的用法示例。
在下文中一共展示了FSEditLogOpCodes.OP_START_LOG_SEGMENT属性的1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: updateState
/**
* For each operation read from the stream, check if this is a closing
* transaction. If so, we are sure we need to move to the next segment.
*
* We also mark that this is the most recent time, we read something valid
* from the input.
*/
private void updateState(FSEditLogOp op, boolean checkTxnId) throws IOException {
InjectionHandler.processEvent(InjectionEvent.SERVERLOGREADER_UPDATE, op);
if (checkTxnId) {
mostRecentlyReadTransactionTxId = ServerLogReaderUtil.checkTransactionId(
mostRecentlyReadTransactionTxId, op);
}
updateStreamPosition();
// read a valid operation
core.getMetrics().readOperations.inc();
mostRecentlyReadTransactionTime = now();
// current log segment ends normally
if (op.opCode == FSEditLogOpCodes.OP_END_LOG_SEGMENT) {
LOG.info("Segment - ending log segment start txid: " + currentSegmentTxId
+ ", end txid: " + op.getTransactionId());
// move forward with next segment
currentSegmentTxId = op.getTransactionId() + 1;
// set the stream to null so the next getNotification()
// will recreate it
currentEditLogInputStream = null;
// indicate that a new stream will be opened
currentEditLogInputStreamPosition = -1;
} else if (op.opCode == FSEditLogOpCodes.OP_START_LOG_SEGMENT) {
LOG.info("Segment - starting log segment start txid: "
+ currentSegmentTxId);
}
}