Github user mateiz commented on a diff in the pull request: https://github.com/apache/spark/pull/158#discussion_r11225067 --- Diff: core/src/main/scala/org/apache/spark/storage/BlockManager.scala --- @@ -59,6 +57,17 @@ private[spark] class BlockManager( private[storage] val memoryStore: BlockStore = new MemoryStore(this, maxMemory) private[storage] val diskStore = new DiskStore(this, diskBlockManager) + var tachyonInitialized = false + private[storage] lazy val tachyonStore: TachyonStore = { + val storeDir = conf.get("spark.tachyonStore.baseDir", System.getProperty("java.io.tmpdir")) --- End diff -- This is indeed kind of weird, but I think the problem is that Tachyon itself doesn't provide a notion of a temp directory. However maybe we should set the default to just "/tmp" instead of System.getProperty(java.io.tmpdir).
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