Shashikant Banerjee created HDFS-12594: ------------------------------------------
Summary: SnapshotDiff - snapshotDiff fails if the snapshotDiff . report exceeds the RPC response limit Key: HDFS-12594 URL: https://issues.apache.org/jira/browse/HDFS-12594 Project: Hadoop HDFS Issue Type: Improvement Components: hdfs Reporter: Shashikant Banerjee Assignee: Shashikant Banerjee The snapshotDiff command fails if the snapshotDiff report size is larger than the configuration value of ipc.maximum.response.length which is by default 128 MB. Worst case, with all Renames ops in sanpshots each with source and target name equal to MAX_PATH_LEN which is 8k characters, this would result in at 8192 renames. SnapshotDiff is currently used by distcp to optimize copy operations and in case of the the diff report exceeding the limit , it fails with the below exception: Test set: org.apache.hadoop.hdfs.server.namenode.snapshot.TestSnapshotDiffReport ------------------------------------------------------------------------------- Tests run: 1, Failures: 0, Errors: 1, Skipped: 0, Time elapsed: 112.095 sec <<< FAILURE! - in org.apache.hadoop.hdfs.server.namenode.snapshot.TestSnapshotDiffReport testDiffReportWithMillionFiles(org.apache.hadoop.hdfs.server.namenode.snapshot.TestSnapshotDiffReport) Time elapsed: 111.906 sec <<< ERROR! java.io.IOException: Failed on local exception: org.apache.hadoop.ipc.RpcException: RPC response exceeds maximum data length; Host Details : local host is: "hw15685.local/10.200.5.230"; destination host is: "localhost":59808; Attached is the proposal for the changes required. -- This message was sent by Atlassian JIRA (v6.4.14#64029) --------------------------------------------------------------------- To unsubscribe, e-mail: hdfs-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: hdfs-issues-h...@hadoop.apache.org