shameersss1 commented on code in PR #274:
URL: https://github.com/apache/tez/pull/274#discussion_r1148784640
##########
tez-api/src/main/java/org/apache/tez/dag/api/TezConfiguration.java:
##########
@@ -1131,6 +1131,14 @@ public TezConfiguration(boolean loadDefaults) {
public static final int TASK_HEARTBEAT_TIMEOUT_CHECK_MS_DEFAULT = 30 * 1000;
+ /**
+ * String value. Comma seperated list of FileSystem paths which needs to be
eagerly initialized.
+ * For example s3://bucket/,file://,hdfs://localhost:8020/
+ */
+ @ConfigurationScope(Scope.AM)
Review Comment:
ack.
##########
tez-runtime-internals/src/main/java/org/apache/tez/runtime/task/TezChild.java:
##########
@@ -503,6 +506,32 @@ public static TezChild newTezChild(Configuration conf,
String host, int port, St
hadoopShim);
}
+ private static void eagerInitFileSystemPaths(Configuration conf) {
+ Collection<String> eagerInitPaths = conf.getTrimmedStringCollection(
+ TezConfiguration.TASK_EAGER_INIT_FS_PATHS);
+ if (eagerInitFsPool == null && !eagerInitPaths.isEmpty()) {
+ eagerInitFsPool = Executors.newCachedThreadPool(new
ThreadFactoryBuilder()
+ .setDaemon(true)
+ .setPriority(Thread.MAX_PRIORITY)
+ .setNameFormat("Eager-Init-Fs-Thread-%d")
+ .build());
+ }
+ for (String path : eagerInitPaths) {
+ eagerInitFsPool.execute(new Runnable() {
+ @Override
+ public void run() {
+ try {
+ new Path(path).getFileSystem(conf);
+ LOG.info("Eagerly initiated FileSystem at path {}", path);
Review Comment:
ack.
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