パッチが適用されているかを簡単に確認する

以前のトピックに似てますが、似たような方法でIDEなどを使わずにパッチが適用されているかを確認します。

例：https://issues.apache.org/jira/secure/attachment/12790079/AMBARI-15100-trunk_4.patch
上記パッチだと、putMetricが追加されたことがわかります。

Ambari Metrics Systemがインストールされたノードにログインしps auxwww | grep metricsなどでAMSのPIDを見つけます。
それらしいのが2つ見つかったので、procからJarファイルを探します。

ls -l /proc/{3195,3241}/fd | grep .jar$

または、パッチのパスからたぶんambari-metrics-commonがファイル名に含まれると思いますので、

[root@node1 ~]# ls -l /proc/{3195,3241}/fd | grep -E ambari-metrics-common.*\.jar$
lr-x------ 1 ams hadoop 64 Nov 21 02:42 86 -> /usr/lib/ambari-metrics-collector/ambari-metrics-common-2.2.2.0.460.jar

[root@node1 ~]# less /usr/lib/ambari-metrics-collector/ambari-metrics-common-2.2.2.0.460.jar | grep TimelineMetricsCache
-rw-r--r--  2.0 unx     5208 b- defN 16-May-05 18:35 org/apache/hadoop/metrics2/sink/timeline/cache/TimelineMetricsCache.class
-rw-r--r--  2.0 unx     3120 b- defN 16-May-05 18:35 org/apache/hadoop/metrics2/sink/timeline/cache/TimelineMetricsCache$TimelineMetricHolder.class
-rw-r--r--  2.0 unx     3251 b- defN 16-May-05 18:35 org/apache/hadoop/metrics2/sink/timeline/cache/TimelineMetricsCache$TimelineMetricWrapper.class 

[root@node1 ~]# /usr/jdk64/jdk1.8.0_60/bin/javap -classpath /usr/lib/ambari-metrics-collector/ambari-metrics-common-2.2.2.0.460.jar org.apache.hadoop.metrics2.sink.timeline.cache.TimelineMetricsCache
Compiled from "TimelineMetricsCache.java"
public class org.apache.hadoop.metrics2.sink.timeline.cache.TimelineMetricsCache {
  public static final int MAX_RECS_PER_NAME_DEFAULT;
  public static final int MAX_EVICTION_TIME_MILLIS;
  public org.apache.hadoop.metrics2.sink.timeline.cache.TimelineMetricsCache(int, int);
  public org.apache.hadoop.metrics2.sink.timeline.cache.TimelineMetricsCache(int, int, boolean);
  public org.apache.hadoop.metrics2.sink.timeline.TimelineMetric getTimelineMetric(java.lang.String);
  public int getMaxEvictionTimeInMillis();
  public void putTimelineMetric(org.apache.hadoop.metrics2.sink.timeline.TimelineMetric);
  public void putTimelineMetric(org.apache.hadoop.metrics2.sink.timeline.TimelineMetric, boolean);
  static int access$000(org.apache.hadoop.metrics2.sink.timeline.cache.TimelineMetricsCache);
  static int access$100(org.apache.hadoop.metrics2.sink.timeline.cache.TimelineMetricsCache);
  static org.apache.commons.logging.Log access$200();
  static {};
}

あれ、putMetricないですね。

[root@node1 ~]# zipgrep putMetric /usr/lib/ambari-metrics-collector/ambari-metrics-common-2.2.2.0.460.jar
org/apache/hadoop/metrics2/sink/timeline/cache/TimelineMetricsCache$TimelineMetricHolder.class:Binary file (standard input) matches
org/apache/hadoop/metrics2/sink/timeline/cache/TimelineMetricsCache$TimelineMetricWrapper.class:Binary file (standard input) matches

[root@node1 ~]# /usr/jdk64/jdk1.8.0_60/bin/javap -classpath /usr/lib/ambari-metrics-collector/ambari-metrics-common-2.2.2.0.460.jar org.apache.hadoop.metrics2.sink.timeline.cache.TimelineMetricsCache\$TimelineMetricHolder
Compiled from "TimelineMetricsCache.java"
class org.apache.hadoop.metrics2.sink.timeline.cache.TimelineMetricsCache$TimelineMetricHolder extends java.util.concurrent.ConcurrentSkipListMap<java.lang.String, org.apache.hadoop.metrics2.sink.timeline.cache.TimelineMetricsCache$TimelineMetricWrapper> {
  final org.apache.hadoop.metrics2.sink.timeline.cache.TimelineMetricsCache this$0;
  org.apache.hadoop.metrics2.sink.timeline.cache.TimelineMetricsCache$TimelineMetricHolder(org.apache.hadoop.metrics2.sink.timeline.cache.TimelineMetricsCache);
  public org.apache.hadoop.metrics2.sink.timeline.TimelineMetric evict(java.lang.String);
  public void put(java.lang.String, org.apache.hadoop.metrics2.sink.timeline.TimelineMetric);
}
[root@node1 ~]# /usr/jdk64/jdk1.8.0_60/bin/javap -classpath /usr/lib/ambari-metrics-collector/ambari-metrics-common-2.2.2.0.460.jar org.apache.hadoop.metrics2.sink.timeline.cache.TimelineMetricsCache\$TimelineMetricWrapper
Compiled from "TimelineMetricsCache.java"
class org.apache.hadoop.metrics2.sink.timeline.cache.TimelineMetricsCache$TimelineMetricWrapper {
  final org.apache.hadoop.metrics2.sink.timeline.cache.TimelineMetricsCache this$0;
  org.apache.hadoop.metrics2.sink.timeline.cache.TimelineMetricsCache$TimelineMetricWrapper(org.apache.hadoop.metrics2.sink.timeline.cache.TimelineMetricsCache, org.apache.hadoop.metrics2.sink.timeline.TimelineMetric);
  public synchronized void putMetric(org.apache.hadoop.metrics2.sink.timeline.TimelineMetric);
  public synchronized long getTimeDiff();
  public synchronized org.apache.hadoop.metrics2.sink.timeline.TimelineMetric getTimelineMetric();
}