Question

我不知道<init>函数的确切含义，为什么会有<>
实际上，DFSClient中没有内部类Conf
我跟踪函数流，直到DistributedFileSystem.initialize行号正确为止，为什么前七个跟踪的行号与源不匹配。

Stacktrace：

[DEBUG] [main] |service.AbstractService|: noteFailure java.lang.NumberFormatException: For input string: "30s"
[INFO] [main] |service.AbstractService|: Service org.apache.tez.dag.app.DAGAppMaster failed in state INITED; cause: java.lang.NumberFormatException: For input string: "30s"
    java.lang.NumberFormatException: For input string: "30s"
    at java.lang.NumberFormatException.forInputString(NumberFormatException.java:65)
    at java.lang.Long.parseLong(Long.java:589)
    at java.lang.Long.parseLong(Long.java:631)
    at org.apache.hadoop.conf.Configuration.getLong(Configuration.java:1311)
    at org.apache.hadoop.hdfs.DFSClient$Conf.<init>(DFSClient.java:502)
    at org.apache.hadoop.hdfs.DFSClient.<init>(DFSClient.java:637)
    at org.apache.hadoop.hdfs.DFSClient.<init>(DFSClient.java:619)
    at org.apache.hadoop.hdfs.DistributedFileSystem.initialize(DistributedFileSystem.java:149)
    at org.apache.hadoop.fs.FileSystem.createFileSystem(FileSystem.java:2653)
    at org.apache.hadoop.fs.FileSystem.access$200(FileSystem.java:92)
    at org.apache.hadoop.fs.FileSystem$Cache.getInternal(FileSystem.java:2687)
    at org.apache.hadoop.fs.FileSystem$Cache.get(FileSystem.java:2669)
    at org.apache.hadoop.fs.FileSystem.get(FileSystem.java:371)
    at org.apache.hadoop.fs.FileSystem.get(FileSystem.java:170)
    at org.apache.hadoop.fs.FileSystem.get(FileSystem.java:355)
    at org.apache.hadoop.fs.Path.getFileSystem(Path.java:295)
    at org.apache.tez.common.TezCommonUtils.getTezBaseStagingPath(TezCommonUtils.java:87)
    at org.apache.tez.common.TezCommonUtils.getTezSystemStagingPath(TezCommonUtils.java:146)
    at org.apache.tez.dag.app.DAGAppMaster.serviceInit(DAGAppMaster.java:492)
    at org.apache.hadoop.service.AbstractService.init(AbstractService.java:163)
    at org.apache.tez.dag.app.DAGAppMaster$9.run(DAGAppMaster.java:2662)
    at java.security.AccessController.doPrivileged(Native Method)
    at javax.security.auth.Subject.doAs(Subject.java:422)
    at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1657)
    at org.apache.tez.dag.app.DAGAppMaster.initAndStartAppMaster(DAGAppMaster.java:2659)
    at org.apache.tez.dag.app.DAGAppMaster.main(DAGAppMaster.java:2464)

Answer 1

1）我不知道<init>函数的确切含义，为什么会有<>

<init>表示构造函数。（如果看到<cinit>是静态初始化伪方法。）

2）实际上，Conf中没有内部类DFSClient

您可能使用了错误的源代码版本。

3）我跟踪函数流，直到DistributedFileSystem.initialize行号正确为止，为什么前七个跟踪的行号与源不匹配。

您可能使用了错误的源代码版本。

java堆栈跟踪的行号与hadoop lib不匹配

1 个答案: