java 堆栈跟踪的行号与 hadoop 库不匹配

Question

我不知道<init>函数的确切含义，为什么会有一个<>
其实DFSClient
我跟踪函数流程，直到DistributedFileSystem.initialize行号正确，为什么前七次跟踪的行号与源不匹配。

堆栈跟踪：

[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$Conf.<init>(DFSClient.java:502)
    at org.apache.hadoop.hdfs.DFSClient.<init>(DFSClient.java:637)
    at org.apache.hadoop.hdfs.DFSClient.<init>(DFSClient.java:619)
    at org.apache.hadoop.hdfs.DistributedFileSystem.initialize(DistributedFileSystem.java:149)
    at org.apache.hadoop.fs.FileSystem.createFileSystem(FileSystem.java:2653)
    at org.apache.hadoop.fs.FileSystem.access0(FileSystem.java:92)
    at org.apache.hadoop.fs.FileSystem$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.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) I don't know the exact meaning of <init> function, why there is an <>

<init>表示构造函数。（如果你看到一个<cinit>那是一个静态初始化伪方法。）

2) Actually there is no inner class Conf in DFSClient

您的源代码版本可能有误。

3) I trace the function flow, until DistributedFileSystem.initialize the line number is right, why top seven traces' line number not match with source.

您的源代码版本可能有误。

java 堆栈跟踪的行号与 hadoop 库不匹配

java stack trace's line number mismatch with hadoop lib

java

stack

trace

numbers

line