HDFS-11333. Print a user friendly error message when plugins are not found. Contributed by Wei-Chiu Chuang.
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@ -921,7 +921,15 @@ private void startInfoServer()
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}
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private void startPlugins(Configuration conf) {
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plugins = conf.getInstances(DFS_DATANODE_PLUGINS_KEY, ServicePlugin.class);
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try {
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plugins = conf.getInstances(DFS_DATANODE_PLUGINS_KEY,
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ServicePlugin.class);
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} catch (RuntimeException e) {
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String pluginsValue = conf.get(DFS_DATANODE_PLUGINS_KEY);
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LOG.error("Unable to load DataNode plugins. Specified list of plugins: " +
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pluginsValue, e);
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throw e;
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}
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for (ServicePlugin p: plugins) {
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try {
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p.start(this);
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@ -809,8 +809,15 @@ private void startCommonServices(Configuration conf) throws IOException {
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httpServer.setFSImage(getFSImage());
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}
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rpcServer.start();
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plugins = conf.getInstances(DFS_NAMENODE_PLUGINS_KEY,
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ServicePlugin.class);
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try {
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plugins = conf.getInstances(DFS_NAMENODE_PLUGINS_KEY,
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ServicePlugin.class);
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} catch (RuntimeException e) {
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String pluginsValue = conf.get(DFS_NAMENODE_PLUGINS_KEY);
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LOG.error("Unable to load NameNode plugins. Specified list of plugins: " +
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pluginsValue, e);
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throw e;
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}
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for (ServicePlugin p: plugins) {
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try {
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p.start(this);
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