以下代碼是在Counters.java。請注意,此代碼位於20.203,20.204和20.205(現稱爲1.0)版本中。另請注意,一些參數是可配置的,有些則不可以。
/** limit on the size of the name of the group **/
private static final int GROUP_NAME_LIMIT = 128;
/** limit on the size of the counter name **/
private static final int COUNTER_NAME_LIMIT = 64;
private static final JobConf conf = new JobConf();
/** limit on counters **/
public static int MAX_COUNTER_LIMIT =
conf.getInt("mapreduce.job.counters.limit", 120);
/** the max groups allowed **/
static final int MAX_GROUP_LIMIT = 50;
在軀幹和0.23釋放下面的代碼是有在MRJobConfig.java。請注意,這些參數是可配置的。
public static final String COUNTERS_MAX_KEY = "mapreduce.job.counters.max";
public static final int COUNTERS_MAX_DEFAULT = 120;
public static final String COUNTER_GROUP_NAME_MAX_KEY = "mapreduce.job.counters.group.name.max";
public static final int COUNTER_GROUP_NAME_MAX_DEFAULT = 128;
public static final String COUNTER_NAME_MAX_KEY = "mapreduce.job.counters.counter.name.max";
public static final int COUNTER_NAME_MAX_DEFAULT = 64;
public static final String COUNTER_GROUPS_MAX_KEY = "mapreduce.job.counters.groups.max";
public static final int COUNTER_GROUPS_MAX_DEFAULT = 50;
您可能會感興趣MAPREDUCE-3520這mail。我打算在MAPREDUCE-3520上工作,但沒有時間:)
不知道爲什麼會有這個投票。 – 2011-12-23 04:20:17
那個downvote是討厭的。許多Solr(Apache發展中的搜索服務器)問題也通過指出Jira中的突出問題得到解答。 – aitchnyu 2011-12-23 05:12:04
+1我認爲這有幫助。也許對downvote發表評論會有幫助嗎? – jayunit100 2011-12-23 05:34:33