TanYuxin created HDFS-14622:
-------------------------------
Summary: State transition err when CCM( HDFS Centralized Cache
Management) feature is used
Key: HDFS-14622
URL: https://issues.apache.org/jira/browse/HDFS-14622
Project: Hadoop HDFS
Issue Type: Bug
Components: tools
Reporter: TanYuxin
When we used dynamometer to test HDFS performance, the test encountered a error
when generate DataNode Block info, then the generation process failed. The
error stack is
{code:java}
Error: java.io.IOException: State transition not allowed; from DEFAULT to
FILE_WITH_REPLICATION at
com.linkedin.dynamometer.blockgenerator.XMLParser.transitionTo(XMLParser.java:107)
at
com.linkedin.dynamometer.blockgenerator.XMLParser.parseLine(XMLParser.java:77)
at
com.linkedin.dynamometer.blockgenerator.XMLParserMapper.map(XMLParserMapper.java:53)
at
com.linkedin.dynamometer.blockgenerator.XMLParserMapper.map(XMLParserMapper.java:26)
at org.apache.hadoop.mapreduce.Mapper.run(Mapper.java:151) at
org.apache.hadoop.mapred.MapTask.runNewMapper(MapTask.java:828) at
org.apache.hadoop.mapred.MapTask.run(MapTask.java:341) at
org.apache.hadoop.mapred.YarnChild$2.run(YarnChild.java:174) at
java.security.AccessController.doPrivileged(Native Method) at
javax.security.auth.Subject.doAs(Subject.java:415) at
org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1690)
at org.apache.hadoop.mapred.YarnChild.main(YarnChild.java:168)
{code}
After checking Fsimage xml and the source code, I find that *XMLParser* can not
parse the lines correctly, these lines are like
{code:java}
<directive><id>8963</id><path>/user/somepath/path1</path><replication>3</replication><pool>cache_other_pool</pool><expiration><millis>1544454142310</millis><relatilve>false</relatilve></expiration>
<directive><id>8964</id><path>/user/somepath/path2</path><replication>3</replication><pool>cache_hadoop-data_pool</pool><expiration><millis>1544497817686</millis><relatilve>false</relatilve></expiration>
<directive><id>8965</id><path>/user/somepath/path3</path><replication>3</replication><pool>cache_hadoop-peisong_pool</pool><expiration><millis>1544451500312</millis><relatilve>false</relatilve></expiration>
<directive><id>8967</id><path>/user/somepath/path4</path><replication>3</replication><pool>cache_other_pool</pool><expiration><millis>1544497602570</millis><relatilve>false</relatilve></expiration>
{code}
These fsimage xml lines are generated when [HDFS Centralized Cache Management
(CCM)|https://hadoop.apache.org/docs/current/hadoop-project-dist/hadoop-hdfs/CentralizedCacheManagement.html]
feature is used.
I have a discuss with [~xkrogen]
[here|[https://github.com/linkedin/dynamometer/pull/77]], and some patches
provided can fix the issue.
[code
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[详细|http://www.youdao.com/search?q=code%20placeholder&ue=utf8&keyfrom=chrome.extension]X
没有英汉互译结果
[请尝试网页搜索|http://www.youdao.com/search?q=code%20placeholder&ue=utf8&keyfrom=chrome.extension]
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