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Adam J Shook edited comment on ACCUMULO-4751 at 12/6/17 11:06 PM: ------------------------------------------------------------------ [~elserj] -Not too certain if we even need that block of code to update metadata for unused WALs in {{DataFileManager}}?- Definitely need it. The solutions I see now would be to: 1. Use {{StatusUtil.openWithUnknownLength(System.currentTimeMillis())}} here to add a {{createdTime}} to the metadata 2. Add the handling logic in the {{StatusMaker}} to set the {{createdTime}} to the WAL to the HDFS timestamp (#2 above) -3. Delete this block entirely (it might be needed at other times? I don't know the pipeline at this level to know if we need to flag unused WALs)- was (Author: adamjshook): [~elserj] -Not too certain if we even need that block of code to update metadata for unused WALs in {{DataFileManager}}?- Definitely need it. The solutions I see now would be to 1. Use {{StatusUtil.openWithUnknownLength(System.currentTimeMillis())}} here to add a {{createdTime}} to the metadata 2. Add the handling logic in the {{StatusMaker}} to set the {{createdTime}} to the WAL to the HDFS timestamp (#2 above) -3. Delete this block entirely (it might be needed at other times? I don't know the pipeline at this level to know if we need to flag unused WALs)- > Some WALs don't replicate due to lacking a createdTime entry > ------------------------------------------------------------ > > Key: ACCUMULO-4751 > URL: https://issues.apache.org/jira/browse/ACCUMULO-4751 > Project: Accumulo > Issue Type: Bug > Affects Versions: 1.7.3, 1.8.1 > Reporter: Adam J Shook > Assignee: Adam J Shook > Attachments: repl_logs.txt > > > From what I can tell, the below error is thrown when no data for a particular > table is written to a WAL, but the file is closed. This would be because the > {{Status}} entry from the {{StatusUtil}} for {{fileClosed}} is pre-built and > therefore does not have a {{createdTime}}. This prevents a WAL from being > replicated until a {{createdTime}} entry is added manually. > From the Accumulo master: > {code} > Status record ([begin: 0 end: 0 infiniteEnd: true closed: true]) for > hdfs://namenode:9000/accumulo/wal/tserver.example.com+31732/f922df9c-3ffc-49ee-8d0c-261c7a05fea2 > in table 7l was written to metadata table which lacked createdTime > {code} > There are two solutions I have in mind: > 1. Update the {{StatusUtil}} such that every returned {{Status}} object sets > the {{createdTime}} to {{System.currentTimeMillis}} if not explicitly given. > 2. Update the Accumulo Master to set the {{createdTime}} to the WAL's > modification time in HDFS if the WAL is closed but there is no > {{createdTime}}. -- This message was sent by Atlassian JIRA (v6.4.14#64029)