scalding: UnGrobidedDumpJob

1 files changed, 67 insertions, 0 deletions

diff --git a/scalding/src/main/scala/sandcrawler/UnGrobidedDumpJob.scala b/scalding/src/main/scala/sandcrawler/UnGrobidedDumpJob.scala
new file mode 100644
index 0000000..0ce9167
--- /dev/null
+++ b/scalding/src/main/scala/sandcrawler/UnGrobidedDumpJob.scala
@@ -0,0 +1,67 @@
+package sandcrawler
+
+import java.util.Properties
+
+import cascading.property.AppProps
+import cascading.tuple.Fields
+import com.twitter.scalding._
+import com.twitter.scalding.typed.TDsl._
+import parallelai.spyglass.base.JobBase
+import parallelai.spyglass.hbase.HBaseConstants.SourceMode
+import parallelai.spyglass.hbase.HBasePipeConversions
+import parallelai.spyglass.hbase.HBaseSource
+
+// Filters for HBase rows which have not had GROBID run on them, but do have
+// full CDX metadata, and dumps to a TSV for later extraction by the
+// "extraction-ungrobided" job.
+//
+// Does the same horrible join thing that UnGrobidedDumpJob does.
+class UnGrobidedDumpJob(args: Args) extends JobBase(args) with HBasePipeConversions {
+
+  val output = args("output")
+
+  val allKeys : TypedPipe[(String,String,String,String)] = UnGrobidedDumpJob.getHBaseKeySource(
+    args("hbase-table"),
+    args("zookeeper-hosts"))
+    .read
+    .fromBytesWritable('key, 'c, 'mime, 'cdx)
+    .toTypedPipe[(String,String,String,String)]('key, 'c, 'mime, 'cdx)
+
+  val existingKeys : TypedPipe[(String,Boolean)] = UnGrobidedDumpJob.getHBaseColSource(
+    args("hbase-table"),
+    args("zookeeper-hosts"))
+    .read
+    .fromBytesWritable('key)
+    .toTypedPipe[String]('key)
+    .map{ key => (key, true) }
+
+  val missingKeys : TypedPipe[(String,String,String,String)] = allKeys
+    .groupBy(_._1)
+    .leftJoin(existingKeys.groupBy(_._1))
+    .toTypedPipe
+    .collect { case (key, ((_, c, mime, cdx), None)) => (key, c, mime, cdx) }
+
+  missingKeys
+    .write(TypedTsv[(String,String,String,String)](output))
+
+}
+
+object UnGrobidedDumpJob {
+
+  // eg, "wbgrp-journal-extract-0-qa",7 "mtrcs-zk1.us.archive.org:2181"
+  def getHBaseColSource(hbaseTable: String, zookeeperHosts: String) : HBaseSource = {
+    HBaseBuilder.build(
+      hbaseTable,
+      zookeeperHosts,
+      List("grobid0:status_code"),
+      SourceMode.SCAN_ALL)
+  }
+
+  def getHBaseKeySource(hbaseTable: String, zookeeperHosts: String) : HBaseSource = {
+    HBaseBuilder.build(
+      hbaseTable,
+      zookeeperHosts,
+      List("f:c", "file:mime", "file:cdx"),
+      SourceMode.SCAN_ALL)
+  }
+}